1. Institute for Behavioral and Community Health; San Diego State University; 9245 Sky Park Court, Suite 221 San Diego CA 92123-4311
2. Global Health Promotion Office; National Center for Chronic Disease Prevention and Health Promotion; Centers for Disease Control and Prevention; 4770 Buford Highway, NE Atlanta MS K-40 GA 30341
3. Research Department of Nutrition Policies and Programs; Center of Nutrition and Health; National Institute of Public Health; Av. Universidad No. 655., Col. Sta. Ma. Ahuacatitlán, Cuernavaca Morelos CP. 62100 Mexico