1. Departments of Medicine and Endocrinology (Y.O., D.D.B.), University of California San Francisco and Veterans Affairs Medical Center, San Francisco, California 94121
2. Department of Pharmaceutical Chemistry (C.S., R.J.C., L.H., A.L.B.), University of California San Francisco, San Francisco, California 94143
3. Cell Biology Program (C.R., C.-P.B.C., L.P.F.), Memorial Sloan-Kettering Cancer Center, New York, New York 10021