1. Section of Infectious Diseases, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
2. Section of Nephrology, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
3. Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts.
4. Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts.
5. Section of Infectious Diseases, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts.
6. Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts.
7. Center for HIV/AIDS Care and Research, Boston University Medical Center, Boston, Massachusetts.