1. Associate Professor, Department of Medicine and Community Health, Tufts Medical School and Director, Frances Stern Nutrition Center.
2. Research Nutritionist, Frances Stern Nutrition Center.
3. Research Trainee, Division of Maternal and Child Health, Harvard School of Public Health.
4. Professor, Division of Maternal and Child Health and Acting Chairman, Department of Health Services, Harvard School of Public Health.
5. Professor, Department of Biostatistics and Health Services, Harvard School of Public Health.