Acknowledgements
We thank Myron S Cohen for his assistance in the earliest stages of this study, including its conceptualisation and securing HIV Prevention Trials Network (HPTN) funding. We also thank Wafaa M El-Sadr for her support throughout the study and critical review of the manuscript. We thank Katherine Davenny for her advocacy and assistance in the entire study process. We thank FHI 360 for their crucial role of in study implementation and Bonnie Dye and Jonathan Lucas in particular. Finally, we thank all of the HPTN protocol team, the site staff in Indonesia, Vietnam, and Ukraine for their dedication to the study, and the participants for their willingness to share their experiences through the study.