1. Department of Family and Community Medicine, Baylor College of Medicine, Houston, Texas
2. Section of Health Services Research, Departments of Medicine and Surgery, Baylor College of Medicine, Houston, Texas
3. Houston VA Center for Innovations in Quality, Effectiveness and Safety (IQuESt), Michael E. DeBakey Veterans Affairs Medical Center, Texas
4. Department of Medicine, Infectious Diseases, Minneapolis Veterans Affairs Health Care System, Minnesota
5. Section of Infectious Diseases, Department of Medicine, Boston Veterans Affairs Healthcare System and Boston University School of Medicine, Massachusetts