The age marker as a predictive indicator for frailty syndrome in the elderly - doi: 10.4025/actascihealthsci.v35i2.12489. Acta Scientiarum. Health Sciences, [S. l.], v. 35, n. 2, p. 273–277, 2013. DOI: 10.4025/actascihealthsci.v35i2.12489. Disponível em: https://www.periodicos.uem.br/ojs/index.php/ActaSciHealthSci/article/view/12489. Acesso em: 29 maio. 2026.