1. Clinical Addiction Research and Education Unit, Section of General Internal Medicine, Evans Department of Medicine, Boston Medical Center and Boston University School of Medicine, Boston, Massachusetts.
2. Women's Health Unit, Section of General Internal Medicine, Evans Department of Medicine, Boston Medical Center and Women's Health Interdisciplinary Research Center, Boston University School of Medicine, Boston, Massachusetts.
3. Division of Infectious Diseases and HIV Medicine, Department of Medicine, Drexel University College of Medicine, Philadelphia, Pennsylvania.