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Sawakuchi AO, Schultz ED, Pupim FN, Bertassoli DJ, Souza DF, Cunha DF, Mazoca CE, Ferreira MP, Grohmann CH, Wahnfried ID, Chiessi CM, Cruz FW, Almeida RP, Ribas CC. Rainfall and sea level drove the expansion of seasonally flooded habitats and associated bird populations across Amazonia. Nat Commun 2022; 13:4945. [PMID: 35999209 PMCID: PMC9399099 DOI: 10.1038/s41467-022-32561-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/05/2022] [Indexed: 01/27/2023] Open
Abstract
Spatial arrangement of distinct Amazonian environments through time and its effect on specialized biota remain poorly known, fueling long-lasting debates about drivers of biotic diversification. We address the late Quaternary sediment deposition that assembled the world's largest seasonally flooded ecosystems. Genome sequencing was used to reconstruct the demographic history of bird species specialized in either early successional vegetation or mature floodplain forests. Sediment deposition that built seasonally flooded habitats accelerated throughout the Holocene (last 11,700 years) under sea level highstand and intensification of the South American Monsoon, at the same time as global increases in atmospheric methane concentration. Bird populations adapted to seasonally flooded habitats expanded due to enlargement of Amazonian river floodplains and archipelagos. Our findings suggest that the diversification of the biota specialized in seasonally flooded habitats is coupled to sedimentary budget changes of large rivers, which rely on combined effects of sea level and rainfall variations. This study found that millennial periods of higher rainfall combined with rising sea level enhanced sediment accumulation in Amazonian rivers valleys. This fuelled synchronous expansion of vegetation adapted to seasonally flooded substrates and its specialized bird populations, showing how global climate changes can affect specific Amazonian species.
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Affiliation(s)
- A O Sawakuchi
- Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, SP, Brazil.
| | - E D Schultz
- Programa de Pós-Graduação em Biologia (Ecologia), Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, Manaus, AM, Brazil.,Department of Ornithology, American Museum of Natural History, 200 Central Park West, New York, NY, USA
| | - F N Pupim
- Departamento de Ciências Ambientais, Universidade Federal de São Paulo (UNIFESP), Rua São Nicolau 210, Diadema, SP, Brazil
| | - D J Bertassoli
- School of Arts, Sciences and Humanities, University of São Paulo, Av. Arlindo Bettio 1000, São Paulo, SP, Brazil
| | - D F Souza
- Gerência de Hidrologia e Gestão Territorial, Serviço Geológico do Brasil (CPRM-SGB), Rua Costa 55, São Paulo, SP, Brazil
| | - D F Cunha
- Programa de Pós-Graduação em Geoquímica e Geotectônica, Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, SP, Brazil
| | - C E Mazoca
- Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, SP, Brazil
| | - M P Ferreira
- Programa de Pós-Graduação em Geoquímica e Geotectônica, Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, SP, Brazil
| | - C H Grohmann
- Institute of Energy and Environment, University of São Paulo, Av. Prof. Luciano Gualberto 1289, São Paulo, SP, Brazil
| | - I D Wahnfried
- Departamento de Geociências, Universidade Federal do Amazonas, Av. Gen. Rodrigo Octávio Jordão Ramos 6200, Manaus, AM, Brazil
| | - C M Chiessi
- School of Arts, Sciences and Humanities, University of São Paulo, Av. Arlindo Bettio 1000, São Paulo, SP, Brazil
| | - F W Cruz
- Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, SP, Brazil
| | - R P Almeida
- Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, SP, Brazil
| | - C C Ribas
- Programa de Pós-Graduação em Biologia (Ecologia), Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, Manaus, AM, Brazil.,Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, Manaus, AM, Brazil
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Cunha DF, Cunha SF, Ferreira TP, Sawan ZT, Rodrigues LS, Prata SP, Silva-Vergara ML. Prolonged QTc intervals on the electrocardiograms of hospitalized malnourished adults. Nutrition 2001; 17:370-2. [PMID: 11377128 DOI: 10.1016/s0899-9007(01)00520-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We investigated whether hospitalized malnourished adults would have longer QTc intervals on their electrocardiograms (ECGs) than non-malnourished adults. Seventy-five consecutive adults hospitalized in the Internal Medicine wards of our teaching hospital were prospectively studied. Main diagnoses, anthropometry, including body mass index (kg/m(2)), ECGs, and simultaneous serum levels of sodium, potassium, magnesium, phosphorus, and calcium were recorded. All QT intervals on ECGs were measured in a semiautomatic image analysis system; and QTc intervals were determined with the Bazett formula. Protein-energy malnutrition (PEM) was diagnosed with body mass index below 18.5 kg/m(2). There was no statistical difference between malnourished (n = 30) and non-malnourished (n = 45) with regard to age (40.7 +/- 18.9 y versus 41.4 +/- 16.2 y), male predominance (66.7% versus 80%), or associated diagnoses. Compared with non-malnourished, malnourished patients had higher percentages of positive C-reactive protein (66.7 versus 23.8%), lower serum levels of albumin (2.51 +/- 0.89 g/dL versus 3.41 +/- 0.74 g/dL) and potassium (3.64 +/- 0.65 mEq/L versus 4.12 +/- 0.65 mEq/L), and increased QTc lengths on ECGs (0.423 +/- 0.033 ms versus 0.396 +/- 0.031 ms). Malnourished adults hospitalized in general clinical wards are more likely to have longer QTc intervals on their ECGs, a phenomenon possibly linked to malnutrition and associated electrolyte disturbances.
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Affiliation(s)
- D F Cunha
- Nutrition Support Team and the Nutrition Division, Department of Internal Medicine, Triângulo Mineiro Medical School, Uberab, MG, Brazil.
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Cunha DF, Cunha SF, Unamuno MR, Vannucchi H. Serum levels assessment of vitamin A, E, C, B2 and carotenoids in malnourished and non-malnourished hospitalized elderly patients. Clin Nutr 2001; 20:167-70. [PMID: 11327745 DOI: 10.1054/clnu.2000.0378] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
AIMS & METHODS Serum levels of vitamins A, E, C, B2 and carotenoids were determined in protein-energy malnourished (PEM, with body mass index, BMI<18.5 kg/m2) and non-PEM (BMI+/-18.5 kg/m2) hospitalized elderly (age > or = 65 years) patients, in the University Hospital of Faculty of Medicine of Ribeirão Preto, São Paulo University. RESULTS PEM (n=21) and non-PEM (n=106) patients were paired for age (73.6+/-7.3 vs. 71.6+/-5.6 years) and male percentage (65.1 vs. 52.4%). As expected, PEM elderly showed lower (P<0.05) body weight (median 43.1; range: 29.9-51.4 vs. 58.1; range: 45.7-143.5 kg), triceps skinfold (5.2+/-3.1 vs. 10.1+/-4.9 mm), and mid-arm muscle circumference (20.3+/-2.5 vs. 23.1+/-3.4 cm). Serum albumin (4.0+/-0.9 vs. 4.1+/-0.7 g/dl) and total lymphocytes count (1918.3+/-919 vs. 1842.7+/-862 mm(3)) were similar, respectively, among PEM and non-PEM patients. The percentage of biochemical riboflavin deficiency (58.8 vs. 56.2), low serum levels of vitamin A (28.6 vs. 29.6) and vitamin E (18.7 vs. 25) were similar, respectively, between PEM and non-PEM groups. The prevalence of low serum levels of water soluble vitamins was higher (P<0.01) in malnourished elderly than in the non-PEM group (ascorbic acid, 80.9 vs. 56.7%, and carotenoids, 14.3 vs. 3%, respectively). CONCLUSIONS These results suggest that hospitalized malnourished elderly show high percentage of low water soluble vitamin serum levels, a phenomenon possibly linked to decreased food intake, especially fruits and vegetables.
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Affiliation(s)
- D F Cunha
- Nutrition Division, Department of Internal Medicine, Medical School of Ribeirão Preto-USP, Ribeirão Preto/SP, Brazil
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Cunha DF, Lara VC, Monteiro JP, Romero HD, Cunha SF. [Growth retardation in children with positive intradermic reaction for leishmaniasis: preliminary results]. Rev Soc Bras Med Trop 2001; 34:25-7. [PMID: 11340493 DOI: 10.1590/s0037-86822001000100004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to compare growth retardation frequency, and 24-h food intake data of children with or without positive Montenegro (leishmanin) test, examined in Porteirinha town, Brazil. Daily nutrient intake was determined by 24-h food intake recall and the anthropometric data were compared to the standard values from WHO. Montenegro-positive (n = 9) and Montenegro-negative (n = 17) groups showed similar age (5.5 +/- 1.9 vs 6.7 +/- 2.3y), and energy (1,456.8 +/- 314.8 vs 1,316.2 +/- 223.8kcal) and protein (50.4 +/- 16.7 vs 49.9 +/- 13.9g) daily consumption, respectively. Montenegro-positive children had higher percentage of stunting than their Montenegro-negative counterparts (44.4 vs 5.9), suggesting that previous Leishmania sp infection had negative impact on children's nutritional status.
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Affiliation(s)
- D F Cunha
- Disciplina de Nutrologia, Departamento de Clínica Médica, Faculdade de Medicina do Triângulo Mineiro, Uberaba, MG.
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Affiliation(s)
- V M Santos
- Departamento de Clinica Médica e Curso de Pós-graduação em Patologia da Faculdade de Medicina do Triângulo Mineiro, Uberaba, MG
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Cunha DF, Frota RB, Arruda MS, Cunha SF, Teixeira VP. Pressure sores among malnourished necropsied adults--preliminary data. Rev Hosp Clin Fac Med Sao Paulo 2000; 55:79-82. [PMID: 10983009 DOI: 10.1590/s0041-87812000000300002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
UNLABELLED Pressure sores are common among bedridden, elderly, or malnourished patients, and may occur in terminal ill patients because of impaired mobility, fecal or urinary incontinence, and decreased healing capacity. The aim of this study was to compare frequency of pressure sores between malnourished and non-malnourished necropsied adults. METHOD All (n = 201) adults (age >/= 18 years) autopsied between 1986 and 1996 at the Teaching Hospital of Triangulo Mineiro Medical School (Uberaba) were eligible for the study. Gender, race, weight, height and main diagnoses were recorded. Ninety-six cases were excluded because of probable body water retention (congestive heart failure, hepatic insufficiency, nephrotic syndrome) or pressure sores secondary to peripheral vascular ischemia. Body mass index (BMI) was used to define malnourished (BMI < 18.5 kg/m2) and non-malnourished (BMI > 18.5kg/m2) groups. RESULTS Except for weight (42.5kg; range: 28-57 vs. 60; 36-134.5kg) and BMI (16.9; range: 12.4-18.5 vs. 22.7; range: 18.5-54.6kg/m2), respectively, there were no statistical differences among 43 malnourished and 62 non-malnourished cases in relation to age (54.9 +/- 20.4 vs. 52.9 +/- 17.9 years), percentage of white persons (74.4 vs. 64.5%), male gender (76.7 vs. 69.3%) and main diagnoses. Five malnourished (11. 6%) and 7 (11.5%) non-malnourished cases had pressure sores (p=0.89). CONCLUSION Pressure sores were equally common findings in necropsied persons with protein-energy malnutrition, as assessed by body mass index.
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Affiliation(s)
- D F Cunha
- Department of Pathology and Nutrology, Faculty of Medicine, Triangulo Mineiro Medical School
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Abstract
BACKGROUND Owing to high diarrhoea and protein malnutrition frequencies in pellagra, we hypothesised that pellagra patients would have higher electrolyte disturbances than non-pellagra alcoholics. OBJECTIVE To compare serum electrolytes of hospitalised alcoholics with or without pellagra. DESIGN Retrospective and descriptive case-control study. SETTING Internal Medicine wards at a University Hospital, Medical School of Uberaba, Brazil. SUBJECTS Medical records were reviewed to obtain relevant clinical details, main diagnosis and laboratory data, including serum electrolytes on hospital admission of pellagra patients (n=33) and a randomly chosen control group of alcoholics (n=37), matched in age, gender and socio-economic status. Anaemia was ascertained by haemoglobin <12.5 g/dl (men) and 1.5 g/dl (women), and hypoalbuminemia by serum albumin <3.3 g/dl. RESULTS Pellagra and controls showed similar age (39.4+/-13.1 vs 45.0+/-11.4 years) and a male predominance of gender (69.7 vs 78.4%), and similar associated diagnoses, including high blood pressure (21.2 vs 16.2%), peripheral neuropathy (12.1 vs 13. 5%), and pneumonia (9.1 vs 13.5%). Despite displaying similar serum sodium (136.6+/-6.1 vs 137.8+/-5.7 mEq/I), magnesium (1.72+/-0.74 vs 1.62+/-0.34 mg/dl), phosphorus (3.79+/-0.87 vs 3.87+/-0.78 mEq/1) than controls,in addition to higher hypoalbuminemia (76.2 vs 33%) and anaemia (60.6 vs 35.1%) frequencies. CONCLUSIONS Higher anaemia and hypoalbuminemia frequencies associated with lower serum potassium levels suggest increased protein malnutrition prevalence among pellagrins.
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Affiliation(s)
- D F Cunha
- Nutrition Division, Department of Internal Medicine, Medical School of Uberaba, Brazil
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Monteiro JP, Cunha DF, da Cunha SF, dos Santos VM, Silva-Vergara ML, Correia D, Bianchi ML. [Iron status, malnutrition and acute phase response in HIV-positive patients]. Rev Soc Bras Med Trop 2000; 33:175-80. [PMID: 10881130 DOI: 10.1590/s0037-86822000000200003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Nutritional status and some iron metabolism parameters of acute phase response (APR) positive and APR-negative AIDS patients were studied. Twenty-nine AIDS patients were submitted to 24h food intake recall, anthropometry, and albumin, C-reactive protein (CRP), hemoglobin, ferritin, and total iron binding capacity (TIBC) measurements. Infection plus serum CRP > 7 mg/dl were criteria for APR presence. Protein-energy malnutrition (PEM) was ascertained by body mass index (BMI) lower than 18.5 kg/m2 and height-creatinine index (HCI < 70%). PEM (77.8 vs 40%) and pulmonary tuberculosis (44. 4 vs 9.5%) were more frequent in APR-positive patients, which also had lower serum albumin (3.7 +/- 0.9 vs 4.3 +/- 0.9 g/dl), TIBC (165. 8 +/- 110.7 vs 265.9 +/- 74.6 mg/dl) and blood hemoglobin (10.5 +/- 1. 8 vs 12.6 +/- 2.3g/dl). Iron intake was similar between groups; however, serum ferritin levels (median, range) were higher among APR-positive (568, 45.3-1814 vs 246, 18.4-1577 ng/ml) patients. HIV-positive adults with systemic response to invading pathogens showed worse nutritional status than those APR-negative. In APR-positive AIDS patients, anemia appears to be unrelated to recent iron intake.
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Affiliation(s)
- J P Monteiro
- Departamento de Clínica Médica, Faculdade de Medicina do Triângulo Mineiro, Uberaba, MG
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Abstract
AIM To verify whether malnourished inpatients receiving a typical Brazilian diet meet their food requirements. METHODS Thirty-five consecutive surgical and medical hospitalized adults, able to feed themselves, received rice and beans based diets for 3 consecutive days. All served food was weighed before and after the meals. Nutrient intake was determined and results compared to American Recommended Dietary Allowances (RDA). Malnutrition was defined by the presence of at least one of these criteria: body mass index &lE 18.5 kg/m(2); height-creatinine index << 70%; or albumin level << 3. 5 g/dl. RESULTS Malnourished and non-malnourished patients were paired in relation to age, gender, diagnoses and clinical parameters. Despite showing distinct anthropometric parameters and laboratory data, malnourished patients ingested enough quantities of food and met or exceeded RDA for energy and other nutrients. CONCLUSIONS Clinically-stable malnourished inpatients, supplied with rice- and beans based diets have adequate energy and nutrient intake, the same occurring for non-malnourished ones.
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Affiliation(s)
- J P Monteiro
- Nutrition Division, Internal Medicine Department, Triângula Mineiro Medical School, Uberaba, Brazil
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Almeida JA, Cunha DF, Olivelra G, Castro EC, Morais CA, Reis MA, Teixoira VP. Relationship between Chagas' disease immunoreactivity in pericardial fluid and survival of children. J Parasitol 1997; 83:519-20. [PMID: 9194837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Pericardial fluid (PF) obtained at autopsy has been used for the study of fluid pericardium proteins in noninfectious and infectious diseases such as Chagas' disease. The aim of the present study was to determine the immunoreactivity to Chagas' disease in PF obtained at autopsy from children in an endemic area. A total of 251 autopsy records were surveyed from the files of the Medical School of Uberaba, Brazil, of children ranging in age from stillborn to 14 yr who had died between 1968 and 1992. The reactions for Chagas' disease (immunofluorescence, complement fixation, and hemagglutination) applied to PF were recorded. Thirty-four children (13.5%) showed positive reactions to Chagas' disease. The frequency of immunoreactivity was significantly related to age-group distribution (chi 2 = 13.4; P < 0.005). Children with negative PF tests who had died between 1 and 60 days of age presented a median survival time of 13 days; positive children presented a median survival time of 4 days (Z = 2.1; P = 0.02). These data indicate that the prevalence of Chagas' disease is high among pregnant women in southern Brazil. In addition, they also suggest that "antitrypanosome antibodies" detected in PF may be 1 of the indicators of age of infant death and may possibly play a role in the course of the disease in children born from mothers with Chagas' disease.
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Affiliation(s)
- J A Almeida
- Faculdade de Medicina do Triângulo Mineiro, Departamento de Clências Biológicas, Uberaba, Minas Cerals, Brazil
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Almeida JA, Cunha DF, Oliveira G, Castro ECC, Morais CA, Reis MA, Teixeira VPA. Relationship between Chagas' Disease Immunoreactivity in Pericardial Fluid and Survival of Children. J Parasitol 1997. [DOI: 10.2307/3284420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Vannucchi H, Fávaro RM, Cunha DF, Marchini JS. Assessment of zinc nutritional status of pellagra patients. Alcohol Alcohol 1995; 30:297-302. [PMID: 7545983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The objective of the present study was to assess zinc nutritional status in alcoholic patients with pellagra using plasma, hair, urine and nail zinc levels, as well as the zinc tolerance test. The study was conducted on 81 patients, 73 males and eight females. Zinc parameters were compared with those of 84 individuals with no apparent disease aged 23-45 years. Plasma zinc levels were lower in patients with pellagra than in the controls (P < 0.01). The results of the zinc tolerance test showed that: (1) basal zinc levels were 69.7 +/- 16.8 micrograms/100 ml in pellagrins and 82.3 +/- 34.0 micrograms/100 ml in the controls (P < 0.01); (2) after 1 h the increase in plasma levels was similar in the pellagrin and control groups; (3) during the second hour the increase was more marked in the controls (P < 0.01), and the same was observed during the third and fourth hours (P < 0.05). Urinary zinc excretion (mg/24 h) was higher in pellagrins (P < 0.01). Zinc concentration in hair and toenails did not differ between pellagrins and controls. We conclude that pellagrins present zinc deficiency as demonstrated by plasma and urine zinc levels and by their abnormal response to the zinc tolerance test. We suggest that hair and nail zinc levels should not be used to assess zinc nutritional status in patients with pellagra.
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Affiliation(s)
- H Vannucchi
- Nutrition Division, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
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Selaimen F, da Motta PE, Cunha DF. [Use of B6, B1, B12 vitamins in polyneuritis due to the use of isonicotinic acid hydrazine]. Hospital (Rio J) 1970; 77:467-72. [PMID: 5311371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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