1. Milken Institute School of Public Health, George Washington University, Washington, DC, USA
2. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
3. Healthcore, Boston, MA, USA
4. Department of Public Health, School of Medicine, Tufts University, Boston, MA, USA
5. Children's Hospital, Harvard Medical School, Boston, MA, USA
6. Merck Pharmaceuticals, Boston, MA, USA