1. Center for Human Growth and Development and Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan
2. Psychology Unit, Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
3. Department of Curriculum, Instruction, and Leadership, Oakland University, Rochester, Michigan
4. Hematology Unit, Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
5. Department of Environmental and Occupational Health, School of Public Health, Faculty of Medicine, University of Chile, Santiago, Chile