1. Population Health Research Center, Mexican National Institute of Public Health, Morelos, Mexico
2. Faculty of Higher Studies of Cuautla, Universidad Autónoma del Estado de Morelos, Morelos, México
3. Public Health Department, Faculty of Medicine, National Autonomous University of Mexico, Ciudad de México, Mexico
4. School of Medicine, Universidad Autónoma del Estado de Morelos, Cuernavaca Morelos, Mexico
5. James P. Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA