1. Division of Epidemiology and BiostatisticsUniversity of California San Francisco San Francisco CA
2. Department of Pediatrics, Division of Child Development and Community HealthUniversity of California San Diego La Jolla CA
3. Public Health PhD ProgramUniversity of Chile Santiago Chile
4. Institute of Nutrition and Food Technology, University of Chile Santiago Chile
5. Department of Pediatrics and Communicable DiseasesUniversity of Michigan Ann Arbor MI