1. Division of Endocrinology, Metabolism, and Molecular Medicine (C.V., K.L., T.C.F.), Charles Drew University of Medicine and Science, Los Angeles, California 90059;
2. Department of Medicine (S.H.M.V.U.), University of Western Ontario, London, Ontario, Canada N6A 4V2;
3. Department of Psychology (L.E.O.), University of Texas at El Paso, El Paso, Texas 79968;
4. College of Pharmacy (K.L.), Western University of Health Sciences, Pomona, California 91766