1. Centro de Investigaciones Tropicales (CITRO) Universidad Veracruzana Xalapa Veracruz Mexico
2. Instituto de Investigaciones en Comportamiento Alimentario y Nutrición (IICAN) Universidad de Guadalajara Ciudad Guzmán Jalisco Mexico
3. Department of Anthropology Northwestern University Evanston Illinois USA
4. Department of Environmental Sciences, Program in Population Biology, Ecology, and Evolutionary Biology Emory University Atlanta Georgia USA
5. Department of Environmental Health, Rollins School of Public Health Emory University Atlanta Georgia USA