1. Research Center on Policies, Population, and Health, School of Medicine, the National Autonomous University of Mexico (UNAM), Mexico City 04510, Mexico
2. Odontology and Health Sciences of the National Autonomous, University of México, Mexico City 04510, Mexico
3. Center for Population Health Research, National Institute of Public Health, Cuernavaca 62100, Mexico
4. Epidemiological and Health Services Research Unit, Morelos Mexican Institute of Social Security, Cuernavaca 62000, Mexico