1. M. Arantxa Colchero is an associate professor of health economics at the Center for Health Systems Research, National Institute of Public Health, in Cuernavaca, Mexico.
2. Juan Rivera-Dommarco is director of the Center for Research on Nutrition and Health, National Institute of Public Health.
3. Barry M. Popkin is a professor in the Department of Nutrition and a fellow at the Carolina Population Center, University of North Carolina, Chapel Hill.
4. Shu Wen Ng ( ) is an associate professor in the Department of Nutrition and a fellow at the Carolina Population Center, University of North Carolina.