1. Society and Health Research Center, School of Public Health Universidad Mayor Santiago Chile
2. Laboratory on Aging and Social Epidemiology, Facultad de Humanidades Universidad Mayor Santiago Chile
3. Department of Epidemiology, Mailman School of Public Health Columbia University NY USA
4. Robert N. Butler Columbia Aging Center, Mailman School of Public Health Columbia University NY USA
5. Institute for Global Health University College London London UK
6. Department of Sociomedical Sciences, Mailman School of Public Health Columbia University NY USA
7. Department of Population Health New York University School of Medicine NY USA