Cecilio Martínez-Vega, Department of Geriatrics, Hospital General de Zona No. 4, Instituto Mexicano del Seguro Social, Guadalupe, Nuevo Leon, Mexico
Lianka C. Rudecino-Martínez, Department of Geriatrics, Hospital General de Zona No. 4, Instituto Mexicano del Seguro Social, Guadalupe, Nuevo Leon, Mexico
Ramiro A. Alvarado-Motte, Department of Internal Medicine. Hospital General de Zona No. 4, Instituto Mexicano del Seguro Social, Guadalupe, Nuevo Leon, Mexico
Dinorah Rodríguez-Navarro, Department of Internal Medicine. Hospital General de Zona No. 4, Instituto Mexicano del Seguro Social, Guadalupe, Nuevo Leon, Mexico
Luis E. Martínez-Bravo, Department of Geriatrics, Hospital General de Zona No. 4, Instituto Mexicano del Seguro Social, Guadalupe, Nuevo Leon, Mexico
Julio C. Dávila-Valero, Department of Geriatrics, Hospital General de Zona No. 4, Instituto Mexicano del Seguro Social, Guadalupe, Nuevo Leon, Mexico