Tavares, D. M. dos S., C. G. Colamego, M. S. Pegorari, P. C. dos S. Ferreira, F. A. Dias, and A. F. Bolina. “Cardiovascular Risk Factors Associated With Frailty Syndrome Among Hospitalized Elderly People: A Cross-Sectional Study”. São Paulo Medical Journal, vol. 134, no. 5, Oct. 2016, pp. 393-9, https://periodicosapm.emnuvens.com.br/spmj/article/view/1140.