1. Department of Psychiatry, Weight and Eating Disorders Program (K.C.A., J.P.O., N.S.M., A.J.S.), Philadelphia, Pennsylvania 19104;
2. Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism (R.S.A., V.S.), University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104;
3. Division of Sleep and Chronobiology (D.F.D.); Philadelphia, Pennsylvania 19104;
4. Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (D.E.C.), University of Washington, Seattle, Washington 98195;
5. Department of Psychiatry (M.H.), Weill Medical College of Cornell University, White Plains, New York 10605