1. Veterans Healthcare System of Ohio (VISN 10), Cincinnati, Ohio.
2. Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio.
3. Department of Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, Ohio.
4. Department of Family Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio.
5. SNS Research, Cincinnati, Ohio.
6. Tibotec Therapeutics, Bridgewater, New Jersey.