1. Ietza Bojorquez-Chapela is a researcher in the Department of Population Studies, College of the Northern Border, in Tijuana, Baja California, Mexico.
2. Cesar Infante () is a researcher in the Center for Health Research Systems, National Institute of Public Health, in Cuernavaca, Morelos, Mexico.
3. Silvana Larrea-Schiavon is a program officer in the Division of Poverty, Gender, and Youth, Population Council, in Mexico City, Mexico.
4. Isabel Vieitez-Martinez is Mexico country director of the Population Council.