About the Authors

Matthew R. Lamb

mrl2013@columbia.edu

Affiliations International Center for AIDS Care and Treatment Programs (ICAP), Mailman School of Public Health, Columbia University, New York, New York, United States of America, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America

Wafaa M. El-Sadr

Affiliations International Center for AIDS Care and Treatment Programs (ICAP), Mailman School of Public Health, Columbia University, New York, New York, United States of America, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America, College of Physicians and Surgeons, Columbia University, New York, New York, United States of America

Elvin Geng

Affiliation Division of HIV/AIDS at San Francisco General Hospital, University of California San Francisco, San Francisco, California, United States of America

Denis Nash

Affiliations Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America, CUNY School of Public Health at Hunter College, New York, New York, United States of America

Competing Interests

Co-author Dr. Geng is a PLoS ONE Editorial Board member. This does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MRL DN. Performed the experiments: MRL. Analyzed the data: MRL. Wrote the paper: MRL DN WES EG.