About the Authors

Annalene Nel

Affiliation International Partnership for Microbicides, Silver Spring, Maryland, United States of America

Linda-Gail Bekker

Affiliation The Desmond Tutu HIV Foundation, University of Cape Town, Cape Town, South Africa

Elizabeth Bukusi

Affiliation Kenya Medical Research Institute, Kisumu, Kenya

Elizabeth Hellstrӧm

Affiliation Be Part Yoluntu Centre, Paarl, South Africa

Philip Kotze

Affiliation Qhakaza Mbokodo Research Clinic, Ladysmith, South Africa

Cheryl Louw

Affiliation Madibeng Centre for Research, Brits, South Africa

Francis Martinson

Affiliation University of North Carolina Project, Lilongwe, Malawi

Gileard Masenga

Affiliation Kilimanjaro Christian Medical Centre, Moshi, Tanzania

Elizabeth Montgomery

Affiliation RTI International, San Francisco, California, United States of America

Nelisiwe Ndaba

Affiliation Maternal, Adolescent and Child Health, Edendale, South Africa

Ariane van der Straten

Affiliation RTI International, San Francisco, California, United States of America

Neliëtte van Niekerk

nvanniekerk@ipmglobal.org.za

Affiliation International Partnership for Microbicides, Silver Spring, Maryland, United States of America

Cynthia Woodsong

Affiliation International Partnership for Microbicides, Silver Spring, Maryland, United States of America

Competing Interests

IPM provided the candidate microbicide and vaginal placebo rings used in this trial. Annalene Nel, Cynthia Woodsong and Neliëtte van Niekerk are employees of IPM.

Author Contributions

Conceived and designed the experiments: AN. Performed the experiments: LB EB EH PK CL FM GM NN. Analyzed the data: EM AVDS NVN CW. Wrote the paper: NVN CW.