1. From the Heart Institute, Good Samaritan Hospital (RAK), Division of Cardiovascular Medicine, Keck School of Medicine, University of Southern California, Los Angeles Cardiology Associates (SHM, TS, RM, GM, SB, HP, CP, RC), Los Angeles and Male Clinic (HP-N), Beverly Hills and Los Angeles, California, and University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School (RR), Piscataway, New Jersey