About the Authors

Peter A. Anton

panton@mednet.ucla.edu

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Terry Saunders

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Julie Elliott

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Elena Khanukhova

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Robert Dennis

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Amy Adler

Current address: Translational Science Corp, Los Angeles, California, United States of America

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Galen Cortina

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

Karen Tanner

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

John Boscardin

Current address: San Francisco VA Medical Center, San Francisco, California, United States of America

Affiliation Center for HIV Prevention Research, UCLA AIDS Institute, Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California, United States of America

William G. Cumberland

Affiliation Department of Biostatistics, University of California Los Angeles School of Public Health, Los Angeles, California, United States of America

Ying Zhou

Affiliation Department of Biostatistics, University of California Los Angeles School of Public Health, Los Angeles, California, United States of America

Ana Ventuneac

Affiliation Department of Psychiatry, Columbia University, New York, New York, United States of America

Alex Carballo-Diéguez

Affiliation Department of Psychiatry, Columbia University, New York, New York, United States of America

Lorna Rabe

Affiliation Magee-Womens Research Institute, University of Pittsburgh Medical School, Pittsburgh, Pennsylvania, United States of America

Timothy McCormick

Affiliation CONRAD, Arlington, Virginia, United States of America

Henry Gabelnick

Affiliation CONRAD, Arlington, Virginia, United States of America

Christine Mauck

Affiliation CONRAD, Arlington, Virginia, United States of America

Ian McGowan

Affiliation Magee-Womens Research Institute, University of Pittsburgh Medical School, Pittsburgh, Pennsylvania, United States of America

Competing Interests

The following authors have the following competing interests: 1) Financial: Paid employment by CONRAD: Tim McCormick, Christine Mauck, Henry Gabelnick. 2) Own stock or shares in CONRAD: None. This affiliation does not affect the authors' adherence to all PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: PAA IM CM HG TM AC-D AV LR JB WGC. Performed the experiments: PAA IM TS AA JE KT GC AV AC-D LR. Analyzed the data: EK JE TS RD JB WGC YZ GC LR PAA IM. Contributed reagents/materials/analysis tools: TM HG CM LR AC-D RD. Wrote the paper: PAA IM CM WGC YZ GC JE TS EK. Coordinated overall research team: PAA IM EK AA JE. Provided overall supervision of the QA program: EK. Supervision of QC activities: EK TS JE. Critically revised the paper and approved the manuscript: PAA IM CM HG WGC YZ GC LR JB TS JE KT. Laboratory supervision: JE. Pharmacy supervision: EK. Data Management/Online Access: BD EK AA.