About the Authors

Alison J. Rodger

alison.rodger@ucl.ac.uk

Affiliation University College London, London, United Kingdom

Andrew Phillips

Affiliation University College London, London, United Kingdom

Andrew Speakman

Affiliation University College London, London, United Kingdom

Richard Gilson

Affiliation University College London, London, United Kingdom

Martin Fisher

Affiliation Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom

Ed Wilkins

Affiliation Pennine Acute Hospitals NHS Trust, Manchester, United Kingdom

Jane Anderson

Affiliation Homerton University Hospital NHS Foundation Trust, London, United Kingdom

Margaret Johnson

Affiliation Royal Free NHS London Foundation Trust, London, United Kingdom

Rebecca O'Connell

Affiliation Newham University NHS Hospital Trust, London, United Kingdom

Simon Collins

Affiliation HIV i-Base, London, United Kingdom

Jonathan Elford

Affiliation City University London, London, United Kingdom

Lorraine Sherr

Affiliation University College London, London, United Kingdom

Fiona C. Lampe

Affiliation University College London, London, United Kingdom

for the ASTRA (Antiretrovirals, Sexual Transmission Risk and Attitudes) Study Group

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

¶ Membership of the ASTRA Study Group is provided in the Acknowledgments.

Conceived and designed the experiments: AR AP FL. Performed the experiments: RG MF EW JA AR MJ RO'C. Analyzed the data: FL. Wrote the paper: AR. Contributed to the study design: AS RG MJ SC JE LS. Contributed to interpretation of the data: AS RG MJ SC JE LS. Contributed to writing of the paper: AS RG MJ SC JE LS.