1
|
Luo L, Fan Y, Wang Y, Wang Z, Zhou J. Prevalence and clinical outcomes of sarcopenia in patients with esophageal, gastric or colorectal cancers receiving preoperative neoadjuvant therapy: A meta-analysis. Asia Pac J Oncol Nurs 2024; 11:100436. [PMID: 38618524 PMCID: PMC11015508 DOI: 10.1016/j.apjon.2024.100436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 03/01/2024] [Indexed: 04/16/2024] Open
Abstract
Objective To investigate the prevalence of sarcopenia and its impact on clinical outcomes in patients with esophageal, gastric, or colorectal cancer (EC, GC, and CRC) receiving neoadjuvant therapy through Meta-analysis. Methods We searched the PubMed, Embase databases, and Cochrane Library for the prevalence of sarcopenia and its impact on clinical outcomes in EC, GC, or CRC patients treated with neoadjuvant therapy (NAT) from inception to November 2022. The primary endpoints were the prevalence of sarcopenia and overall survival in patients with EC, GC, or CRC treated with NAT. Secondary outcomes included recurrence-free survival, total postoperative complications, grade 3-4 chemotherapy toxicity, and 30-day mortality after surgery. Results Thirty-one retrospective studies with 3651 subjects were included. In a fixed-effects model, the prevalence of muscle loss was higher in patients with EC, GC, or CRC at 50% (95% CI = 42% to 58%). The results of the multivariate analysis showed that preoperative patients with sarcopenia had a 1.91 times shorter overall survival (95% CI = 1.61-2.27) and a 1.77 times shorter recurrence-free survival time (95% CI = 1.33-2.35) than patients without sarcopenia, and that patients with sarcopenia had a higher risk of total postoperative complications than patients without sarcopenia OR = 1.27 (95% CI = 1.03-1.57). However, the two groups had no statistical difference in grade 3-4 chemotherapy toxicity (P = 0.84) or 30-d postoperative mortality (P = 0.88). Conclusions The prevalence of sarcopenia in patients with EC, GC, or CRC during NAT is high, and it is associated with poorer clinical outcomes. Clinicians should closely monitor the changes in patients' body composition and guide patients to carry out a reasonable diet and appropriate exercise to improve their poor prognosis and quality of life. Systematic review registration CRD42023387817.
Collapse
Affiliation(s)
- Lin Luo
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yidan Fan
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yanan Wang
- First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhen Wang
- Traumatic Orthopedics, Guangzhou Red Cross Hospital, Guangzhou, China
| | - Jian Zhou
- Mammography, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| |
Collapse
|
2
|
Zeng X, Zhang L, Zhang Y, Jia S, Lin T, Zhao X, Huang X. Prevalence and prognostic value of baseline sarcopenia in hematologic malignancies: a systematic review. Front Oncol 2023; 13:1308544. [PMID: 38162495 PMCID: PMC10755879 DOI: 10.3389/fonc.2023.1308544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024] Open
Abstract
Background The correlation between sarcopenia and hematological malignancy prognosis is still controversial. Design: A systematic review and meta-analysis. Objectives: To explore sarcopenia's prevalence and prognostic value in hematologic malignancies. Data sources and methods We searched Embase, MEDLINE, and Cochrane Library through Ovid SP using an appropriate search strategy on August 28, 2022, and updated the search results on January 9, 2023. Study quality was assessed using the Newcastle-Ottawa scale. The pooled prevalence of sarcopenia was calculated with a 95% confidence interval (CI). Relationships between sarcopenia and prognostic value were expressed as hazard ratio (HR) and 95% CI. HR means the probability of something undesirable, i.e., death or disease progression. Results The search identified more than 3992 studies, and 21 (3354 patients, median or mean age ranging from 36 to 78 years) were finally included. The risk of bias in the studies was low to medium. All included studies were diagnosed based on low muscle mass (LMM). Muscle mass was assessed mainly through imaging technologies, and different cut-offs were applied to determine LMM. The prevalence of sarcopenia was 44.5%, which could fluctuate by age. Subgroup analysis showed that older people had a higher sarcopenic rate than the non-elderly group. Sarcopenia resulted in an inferior prognosis [overall survival: HR 1.821, 95% CI 1.415-2.343; progression-free survival: HR 1.703, 95% CI 1.128-2.571). Conclusion Sarcopenia has a prevalence of over 30% in malignant hematologic patients and is associated with a poorer prognosis. Future studies with a standardized sarcopenia diagnostic criterion were needed to investigate sarcopenia's prevalence and prognostic effects in hematologic malignancies.
Collapse
Affiliation(s)
- Xiaofeng Zeng
- The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Liying Zhang
- The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Zhang
- Sichuan University Library, Sichuan University, Chengdu, China
| | - Shuli Jia
- The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Taiping Lin
- The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Xuman Zhao
- The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoli Huang
- The Center of Gerontology and Geriatrics, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| |
Collapse
|
3
|
Klassen PN, Mazurak VC, Thorlakson J, Servais S. Call for standardization in assessment and reporting of muscle and adipose change using computed tomography analysis in oncology: A scoping review. J Cachexia Sarcopenia Muscle 2023; 14:1918-1931. [PMID: 37675809 PMCID: PMC10570077 DOI: 10.1002/jcsm.13318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 09/08/2023] Open
Abstract
Investigators are increasingly measuring skeletal muscle (SM) and adipose tissue (AT) change during cancer treatment to understand impact on patient outcomes. Recent meta-analyses have reported high heterogeneity in this literature, representing uncertainty in the resulting estimates. Using the setting of palliative-intent chemotherapy as an exemplar, we aimed to systematically summarize the sources of variability among studies evaluating SM and AT change during cancer treatment and propose standards for future studies to enable reliable meta-analysis. Studies that measured computed tomography-defined SM and/or AT change in adult patients during palliative-intent chemotherapy for solid tumours were included, with no date or geographical limiters. Of 2496 publications screened by abstract/title, 83 were reviewed in full text and 38 included for extraction, representing 34 unique cohorts across 8 tumour sites. The timing of baseline measurement was frequently defined as prior to treatment, while endpoint timing ranged from 6 weeks after treatment start to time of progression. Fewer than 50% specified the actual time interval between measurements. Measurement error was infrequently discussed (8/34). A single metric (cm2 /m2 , cm2 or %) was used to describe SM change in 18/34 cohorts, while multiple metrics were presented for 10/34 and no descriptive metrics for 6/34. AT change metrics and sex-specific reporting were available for 10/34 cohorts. Associations between SM loss and overall survival were evaluated in 24 publications, with classification of SM loss ranging from any loss to >14% loss over variable time intervals. Age and sex were the most common covariates, with disease response in 50% of models. Despite a wealth of data and effort, heterogeneity in study design, reporting and statistical analysis hinders evidence synthesis regarding the severity and outcomes of SM and AT change during cancer treatment. Proposed standards for study design include selection of homogenous cohorts, clear definition of baseline/endpoint timing and attention to measurement error. Standard reporting should include baseline SM and AT by sex, actual scan interval, SM and AT change using multiple metrics and visualization of the range of change observed. Reporting by sex would advance understanding of sexual dimorphism in SM and AT change. Evaluating the impact of tissue change on outcomes requires adjustment for relevant covariates and concurrent disease response. Adoption of these standards by researchers and publishers would alter the current paradigm to enable meta-analysis of future studies and move the field towards meaningful application of SM and AT change to clinical care.
Collapse
Affiliation(s)
- Pamela N. Klassen
- Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - Vera C. Mazurak
- Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | | | - Stephane Servais
- Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
- Faculté de MédecineInserm UMR1069 Nutrition Croissance et Cancer, Université de ToursTours CedexFrance
| |
Collapse
|
4
|
Abstract
Significant progress in our understanding of cancer cachexia has occurred in recent years. Despite these advances, no pharmacologic agent has achieved US Food and Drug Administration approval for this common and highly morbid syndrome. Fortunately, improved understanding of the molecular basis of cancer cachexia has led to novel targeted approaches that are in varying stages of drug development. This article reviews two major thematic areas that are driving these pharmacologic strategies, including those targeting signal mediators at the level of the CNS and skeletal muscle. Additionally, pharmacologic strategies are being tested in combination with targeted nutrients, nutrition therapy, and exercise to treat cancer cachexia. To this end, we highlight recently published and ongoing trials evaluating cancer cachexia therapies in these specific areas.
Collapse
Affiliation(s)
- Kunal C. Kadakia
- Department of Solid Tumor Oncology, Levine Cancer Institute, Atrium Health, Charlotte, NC
- Department of Supportive Oncology, Levine Cancer Institute, Atrium Health, Charlotte, NC
| | - Jill M. Hamilton-Reeves
- Department of Urology, University of Kansas Medical Center, Kansas City, KS
- Department of Dietetics and Nutrition, University of Kansas Medical Center, Kansas City, KS
| | - Vickie E. Baracos
- Division of Palliative Care Medicine, Department of Oncology, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
5
|
Klassen P, Schiessel DL, Baracos VE. Adverse effects of systemic cancer therapy on skeletal muscle: myotoxicity comes out of the closet. Curr Opin Clin Nutr Metab Care 2023; 26:210-218. [PMID: 36942895 DOI: 10.1097/mco.0000000000000922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
PURPOSE OF REVIEW Systemic cancer therapy-associated skeletal muscle wasting is emerging as a powerful impetus to the overall loss of skeletal muscle experienced by patients with cancer. This review explores the clinical magnitude and biological mechanisms of muscle wasting during systemic cancer therapy to illuminate this adverse effect. Emerging strategies for mitigation are also discussed. RECENT FINDINGS Clinical findings include precise, specific measures of muscle loss over the course of chemotherapy, targeted therapy and immunotherapy. All these therapeutic classes associate with quantitatively important muscle loss, independent of tumor response. Parallel experimental studies provide understanding of the specific molecular basis of wasting, which can include inhibition of protein synthesis, proliferation and differentiation, and activation of inflammation, reactive oxygen species, autophagy, mitophagy, apoptosis, protein catabolism, fibrosis and steatosis in muscle. Strategies to mitigate these muscle-specific adverse effects of cancer therapy remain in the earliest stages of development. SUMMARY The adverse side effect of cancer therapy on skeletal muscle has been largely ignored in the development of cancer therapeutics. Given the extent to which loss of muscle mass and function can bear on patients' function and quality of life, protection/mitigation of these side effects is a research priority.
Collapse
Affiliation(s)
- Pamela Klassen
- Department of Agricultural, Food & Nutritional Sciences, University of Alberta, Canada
| | - Dalton L Schiessel
- Department of Nutrition, Health Science Center, Campus CEDETEG, Midwest State University - UNICENTRO, Guarapuava, Parana State, Brazil
| | - Vickie E Baracos
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
6
|
Luo L, Shen X, Fang S, Wan T, Liu P, Li P, Tan H, Fu Y, Guo W, Tang X. Sarcopenia as a risk factor of progression-free survival in patients with metastases: a systematic review and meta-analysis. BMC Cancer 2023; 23:127. [PMID: 36750774 PMCID: PMC9906917 DOI: 10.1186/s12885-023-10582-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 01/25/2023] [Indexed: 02/09/2023] Open
Abstract
BACKGROUND Metastasis of cancer causes more than 90% of cancer deaths and is severely damaging to human health. In recent years, several studies have linked sarcopenia to shorter survival in patients with metastatic cancer. Several predictive models exist to predict mortality in patients with metastatic cancer, but have reported limited accuracy. METHODS We systematically searched Medline, EMBASE, and the Cochrane Library for articles published on or before October 14, 2022. Pooled Hazard Ratio (HR) estimates with 95% confidence intervals (CIs) were calculated using a random effects model. The primary outcome was an increased risk of death or tumor progression in patients with metastatic cancer, which is expressed as progression-free survival (PFS). In addition, we performed subgroup analyses and leave-one-out sensitivity analyses to explore the main sources of heterogeneity and the stability of the results. RESULTS Sixteen retrospective cohort studies with 1,675 patients were included in the 888 papers screened. The results showed that sarcopenia was associated with lower progression-free survival (HR = 1.56, 95% CI = 1.19-2.03, I2 = 76.3%, P < 0.001). This result was further confirmed by trim-and-fill procedures and leave-one-out sensitivity analysis. CONCLUSIONS This study suggests that sarcopenia may be a risk factor for reduced progression-free survival in patients with metastatic cancer. Further studies are still needed to explain the reason for this high heterogeneity in outcome. TRIAL REGISTRATION CRD42022325910.
Collapse
Affiliation(s)
- Lingli Luo
- Medical College, Hunan Polytechnic of Environment and Biology, Hunan Province 421005 Hengyang, China
| | - Xiangru Shen
- grid.412017.10000 0001 0266 8918Hengyang Medical College, University of South China, Hunan 421001 Hengyang, China
| | - Shuai Fang
- grid.412017.10000 0001 0266 8918Hengyang Medical College, University of South China, Hunan 421001 Hengyang, China
| | - Teng Wan
- grid.33199.310000 0004 0368 7223Department of Neurology, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, 518060 China
| | - Pan Liu
- grid.412017.10000 0001 0266 8918Hengyang Medical College, University of South China, Hunan 421001 Hengyang, China
| | - Peiling Li
- grid.412017.10000 0001 0266 8918Hengyang Medical College, University of South China, Hunan 421001 Hengyang, China
| | - Haifeng Tan
- grid.412017.10000 0001 0266 8918Hengyang Medical College, University of South China, Hunan 421001 Hengyang, China
| | - Yong Fu
- grid.412017.10000 0001 0266 8918Department of Trauma Orthopaedic, The Second Affiliated Hospital, Hengyang Medical College, University of South China, Hengyang, 421001 Hunan China
| | - Weiming Guo
- grid.33199.310000 0004 0368 7223Department of Sports Medicine, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, 518060 China
| | - Xiaojun Tang
- The Second Affiliated Hospital, Department of Spinal Surgery, Hengyang Medical School, University of South China, Hunan, 421001, Hengyang, China.
| |
Collapse
|
7
|
Beukers K, Voorn M, Trepels R, van de Wouw A, Vogelaar F, Havermans R, Janssen-Heijnen M. Associations between outcome variables of nutritional screening methods and systemic treatment tolerance in patients with colorectal cancer: A systematic review. J Geriatr Oncol 2022; 13:1092-1102. [DOI: 10.1016/j.jgo.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 05/17/2022] [Accepted: 06/22/2022] [Indexed: 02/07/2023]
|
8
|
Meyer H, Strobel A, Wienke A, Surov A. Prognostic role of low-skeletal muscle mass on staging computed tomography in metastasized colorectal cancer: a systematic review and meta-analysis. Clin Colorectal Cancer 2022. [DOI: 10.1016/j.clcc.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/08/2022] [Accepted: 03/16/2022] [Indexed: 11/22/2022]
|
9
|
Lucijanic M, Huzjan Korunic R, Sedinic M, Kusec R, Pejsa V. More Pronounced Muscle Loss During Immunochemotherapy is Associated with Worse Clinical Outcomes in Newly Diagnosed Patients with Diffuse Large B-Cell Lymphoma with Unfavorable Features. Ther Clin Risk Manag 2021; 17:1037-1044. [PMID: 34594106 PMCID: PMC8478493 DOI: 10.2147/tcrm.s323749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/13/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction Cancer-induced cachexia is associated with poor prognosis in patients with non-Hodgkin lymphoma, but it is unknown how and to what extent curable lymphoma treatments affect the musculoskeletal system. Patients and Methods We retrospectively analyzed 104 newly diagnosed diffuse large B-cell lymphoma (DLBCL) patients with unfavorable disease features treated with the R-DA-EPOCH regimen. Psoas muscle area (PMA) measured at L3 vertebra level was compared between staging (pre-therapy) and revision (end of treatment) computerized tomography (CT) scans. Results Small but significant decline in PMA was observed during the immunochemotherapy period (average loss 5%; P=0.016) with 57.7% of patients experiencing muscle loss. Higher body surface area (OR=17.98 for each m2; P=0.034), number of cycles with dose reduction (OR=2.86 for each cycle; P=0.039) and worse response to therapy (OR=3.09 for each response category; P=0.052) were recognized as independent contributors to the PMA loss in multivariate analysis. One quarter of patients had more pronounced PMA loss (≥21%), which was associated with significantly worse overall and progression-free survival. Both ≥21% PMA loss and non-achieving response to therapy remained independently associated with inferior OS (PMA loss HR=2.98; P=0.016 and achieving response HR=0.04; P<0.001) and PFS (PMA loss HR=3.16; P=0.005 and achieving response HR=0.08; P=0.001) in multivariate analyses. Discussion Muscle loss occurs in approximately half of newly diagnosed DLBCL patients with unfavorable disease features during R-DA-EPOCH immunochemotherapy. If pronounced, this is associated with worse clinical outcomes irrespectively of achieved response to therapy. Muscle loss seems to be mostly affected by the efficacy and tolerability of the regimen.
Collapse
Affiliation(s)
- Marko Lucijanic
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia
| | - Renata Huzjan Korunic
- University of Zagreb School of Medicine, Zagreb, Croatia.,Radiology Department, University Hospital Dubrava, Zagreb, Croatia
| | - Martina Sedinic
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia
| | - Rajko Kusec
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia
| | - Vlatko Pejsa
- Hematology Department, University Hospital Dubrava, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia
| |
Collapse
|
10
|
Argillander TE, Spek D, van der Zaag-Loonen HJ, van Raamt AF, van Duijvendijk P, van Munster BC. Association between postoperative muscle wasting and survival in older patients undergoing surgery for non-metastatic colorectal cancer. J Geriatr Oncol 2021; 12:1052-1058. [PMID: 33858804 DOI: 10.1016/j.jgo.2021.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/19/2021] [Accepted: 04/09/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND Preoperative sarcopenia in older patients is a risk factor for adverse outcomes after colorectal cancer (CRC) surgery. Longitudinal changes in muscle mass in this group have not been studied previously although muscle wasting may have prognostic significance regarding survival. We aimed to determine the association between muscle wasting and overall survival (OS) in older patients who underwent surgery for CRC. METHODS Patients ≥70 years who underwent surgery for non-metastatic CRC in Gelre hospitals, The Netherlands, between 2011 and 2015 were included. Cross-sectional area of skeletal muscle was measured at the level of the 3rd lumbar vertebra on preoperative and postoperative abdominal CT-scans. Patients who had >1 standard deviation decrease in muscle mass were considered to have muscle wasting. Cox regression analysis was used to evaluate associations between muscle wasting and OS. RESULTS 233 patients were included (40% female, median age 76 years). Thirty-four patients had muscle wasting. After a median follow-up of 4.7 years, 53 (23%) patients died. The 3-year mortality rate was higher in patients with muscle wasting (27% vs 14%, p = .05). In multivariable analysis adjusted for age, recurrent disease and preoperative muscle mass, muscle wasting was associated with reduced OS (HR 2.8, 95% CI 1.5-5.4, p = .002). CONCLUSION Muscle wasting predicted poorer survival in older patients who underwent CRC surgery. Measuring changes in muscle mass may improve risk prediction in this patient group. Future studies should address the etiology of muscle wasting in older patients with CRC. Whether perioperative exercise interventions can prevent muscle wasting also warrants further study.
Collapse
Affiliation(s)
- Tanja E Argillander
- Department of Surgery, Gelre Hospitals, Apeldoorn, the Netherlands; Department of Geriatric Medicine, Gelre Hospitals, Apeldoorn, the Netherlands; University of Groningen, University Medical Center Groningen, University Center for Geriatric Medicine, Groningen, the Netherlands.
| | - Daniëlle Spek
- Department of Surgery, Gelre Hospitals, Apeldoorn, the Netherlands
| | - Hester J van der Zaag-Loonen
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, the Netherlands
| | - A Fleur van Raamt
- Department of Radiology, Gelre Hospitals, Apeldoorn, the Netherlands
| | | | - Barbara C van Munster
- University of Groningen, University Medical Center Groningen, University Center for Geriatric Medicine, Groningen, the Netherlands
| |
Collapse
|