About the Authors

Vera Halpern

vhalpern@fhi.org

Affiliation Family Health International, Research Triangle Park, North Carolina, United States of America

Folasade Ogunsola

Affiliation College of Medicine, University of Lagos, Lagos, Nigeria

Orikomaba Obunge

Affiliation Teaching Hospital, University of Port Harcourt, Port Harcourt, Nigeria

Chin-Hua Wang

Affiliation Family Health International, Research Triangle Park, North Carolina, United States of America

Nneka Onyejepu

Affiliation Teaching Hospital, University of Port Harcourt, Port Harcourt, Nigeria

Oyinola Oduyebo

Affiliation College of Medicine, University of Lagos, Lagos, Nigeria

Doug Taylor

Affiliation Family Health International, Research Triangle Park, North Carolina, United States of America

Linda McNeil

Affiliation Family Health International, Research Triangle Park, North Carolina, United States of America

Neha Mehta

Affiliation Family Health International, Research Triangle Park, North Carolina, United States of America

John Umo-Otong

Affiliation Teaching Hospital, University of Port Harcourt, Port Harcourt, Nigeria

Sakiru Otusanya

Affiliation College of Medicine, University of Lagos, Lagos, Nigeria

Tania Crucitti

Affiliation HIV/STI Epidemiology and Control Unit, Institute of Tropical Medicine, Antwerp, Belgium

Said Abdellati

Affiliation HIV/STI Epidemiology and Control Unit, Institute of Tropical Medicine, Antwerp, Belgium

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: VH DT TC. Performed the experiments: FO OObunge JUO SO. Analyzed the data: VH CHW NO OOduyebo DT TC SA. Wrote the paper: VH CHW DT. Provided overall supervision of the trial: VH. Interpreted the data: FO OObunge NO OOduyebo TC. Critically revised the paper for important intellectual content: FO OObunge NO OOduyebo TC. Supervised all aspects of the trial in Lagos: FO. Reviewed, approved and takes responsibility for the manuscript: FO OObunge NO OOduyebo LM NM JUO SO TC SA. Supervised all aspects of the trial in Port Harcourt: OObunge. Acquired and facilitated management of the data: LM NM JUO SO SA. Monitored the fieldwork: LM NM. Trained site staff: LM. Coordinated all site staff: JUO SO. Led data querying and cleaning efforts: JUO SO.