1. Division of General Internal Medicine, Department of Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York.
2. Division of General Internal Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
3. Division of General Internal Medicine and Geriatrics, Department of Medicine, Oregon Health & Science University, Portland, Oregon.
4. Division of Infectious Diseases, Department of Medicine, Wayne State University School of Medicine, Detroit, Michigan.
5. Center for Comprehensive Care, St. Luke's-Roosevelt Hospital Center, New York, New York.
6. Division of Infectious Diseases and Clinical Pharmacology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
7. Section of General Internal Medicine, Portland VA Medical Center, Portland, Oregon.