1. Instituto Nacional de Geriatría , Ciudad de México , México
2. Global Health Research Departament, Juntendo University , Tokyo , Japan
3. Geriatric deparment, Hospital General ISSSTE , Querétaro , México
4. Instituto Mexicano del Seguro Social Analysis and Synthesis of the Evidence Research Unit, National Medical Center XXI Century, , Mexico City , México
5. World Health Organization Department of Maternal, Newborn, Child, Adolescent Health and Ageing, , Geneva , Switzerland
6. World Health Organization Department of Social Determinants of Health, Division of Healthier Populations, , Geneva , Switzerland