1. Department of Health Policy, Vanderbilt University School of Medicine, Nashville, Tennessee
2. Division of Rheumatology, Departments of Medicine and Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
3. Division of Clinical Pharmacology, Departments of Medicine and Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
4. Veterans Administration Tennessee Valley Health Care System, Nashville
5. Divisions of Cardiology, Departments of Medicine and Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
6. Division of Gastroenterology, Departments of Medicine and Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
7. Division of Biostatistics, Departments of Medicine and Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee