1. New England Research Institute, The Frances Stern Nutrition Center/New England Medical Center Hospital, Boston, Massachusetts
2. Center for Health Promotion Research and Development, University of Texas Health Science Center, Houston, Texas
3. New England Research Institute, Watertown, Massachusetts
4. Division of Epidemiology and Clinical Applications, National Heart, Lung, and Blood Institute, Bethesda, Maryland
5. Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
6. Child and Family Health Studies, University of California, San Diego, California
7. School of Public Health, University of Minnesota, Minneapolis, Minnesota