1. Department of Medicine, Obesity Research Center, St. Luke’s-Roosevelt Hospital, and
2. Department of Human Nutrition, Wageningen Agricultural University, Wageningen, The Netherlands;
3. Teachers College, Columbia University, New York, New York 10025;
4. Clinical Nutrition Laboratories, School of Medicine, University of New Mexico, Albuquerque, New Mexico 87131; and
5. National Institute on Aging, Bethesda, Maryland 20892