1. Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts
2. Department of Human Nutrition, Wageningen University, Wageningen, the Netherlands
3. Department of Physiological Sciences, Netherlands Organization for Applied Scientific Research Quality of Life, Zeist, the Netherlands
4. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
5. Channing Laboratory, Harvard Medical School, Boston, Massachusetts
6. Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
7. Program in Molecular and Genetic Epidemiology, Harvard School of Public Health, Boston, Massachusetts
8. Department of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, Massachusetts