1. Yale School of Medicine, New Haven, Connecticut, USA.
2. Harvey Cushing/John Hay Whitney Medical Library, Yale University, New Haven, Connecticut, USA.
3. Social Intervention Group, Columbia University School of Social Work, New York, New York, USA.
4. Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA.
5. Department of Medicine, Section of Infectious Diseases, AIDS Program, Yale School of Medicine, New Haven, Connecticut, USA.