1. From The University of Texas Southwestern Medical Center at Dallas, Dallas, Texas (CGR, JDM), Clinical Science Center, University of Wisconsin, (RB) and Jackson Foundation (GHM), Madison, Wisconsin, Harvard Medical School, Boston, Massachusetts (BS), South Florida Medical Research, Aventura, Florida (MCG), Seattle, Washington (JEG), Merck Research Laboratories, Rahway, New Jersey (SS, JD, AM, JW) and Department of Urology, Queen’s University, Kingston General Hospital, Ontario, Canada (JCN)