| Affiliation: | 1. Department of Surgery, University of California, San Francisco, San Francisco, Calif;5. Departments of Medicine and of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, Calif;6. Cardiovascular Research Institute, University of California, San Francisco, San Francisco, Calif;2. VIPERx Laboratory, San Francisco, Calif;3. Department of Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SDak;4. Health Diagnostic Laboratory, Inc, Richmond, Va;g Department of Surgery, Veterans Affairs Medical Center, San Francisco, Calif |
