1. Department of Medicine, George Washington University School of Medicine, Washington, DC
2. Physicians Committee for Responsible Medicine, Washington, DC
3. Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, and the Clinical Nutrition and Risk Factor Modification Center, St. Michael’s Hospital, Toronto, Canada
4. Department of Nutrition, School of Public Health, University of North Carolina, Chapel Hill, North Carolina
5. Private practice, Arlington, Virginia