Claudia Estcourt, MBBS, MD¹, Lorna Sutcliffe, MSc², Cath Mercer, BSc, MSc, PhD³, Andrew Copas, BA, MSc, PhD⁴, Pamela Muniia, MSc⁵, Greta Rait, MSc, MD⁵, Merle Symonds, Dip HE⁶, Laura Greaves, BSC, MSc⁷, Kazeem Aderogba, MBChB⁸, Donal Traynor, Esq⁸, Tracy Roberts, PhD⁹, Louise Jackson, PhD⁹, Anne Johnson, MBBS, MD¹⁰, Sarah Creighton, MBBS BSc¹¹, Geoff Huckle, Esq¹¹ and Jackie Cassell, BMBCh, MSc, MD, BA (Philosophy)¹², 1Centre for Immunology & Infectious Disease Blizard Institute Barts & The London School of Medicine & Dentistry, Queen Mary University of London & Barts Health NHS Trust, London, United Kingdom, 2Queen Mary University of London, 3Department of Infection and Population Health, University College London, London, United Kingdom, 4Department of Infection and Population Health, Centre for Sexual Health and HIV Research, London, United Kingdom, 5University College London, 6Infection & Immunity, Barts Health NHS Trust, LONDON, United Kingdom, 7Barts Health NHS Trust, 8East Sussex Healthcare Trust, 9University of Birmingham, 10Research Department of Infection and Population Health, University College London, London, United Kingdom, 11Homerton University Hospital NHS Foundation Trust, 12Brighton & Sussex Medical School

Michelle Cantu, MPH¹, Jenna Gaarde, BA², Celia Hernandez, BA³ and Francisco Reyes, MPA³, 1Clinical and Community Health Programs, California Family Health Council, Los Angeles, CA, 2California Family Health Council, 3Clinical & Community Health Programs, California Family Health Council, Los Angeles, CA

JaNelle M. Ricks, DrPH, Andrea Swartzendruber, MPH, PhD, Lorin Boyce, MS, Jessica M. Sales, PhD, Ralph J. DiClemente, PhD and Eve S. Rose, MSPH, Rollins School of Public Health, Department of Behavioral Sciences and Health Education, Emory University, Atlanta, GA

Victoria Mobley, MD MPH¹, Michael Hilton, BS², Todd vanhoy, BA³, Evelyn Foust, CPM, MPH¹ and Peter Leone, MD⁴, 1North Carolina Department of Health and Human Services, North Carolina Division of Public Health, Raleigh, NC, 2North Carolina Department of Health and Human Services, North Carolina Divsion of Public Health, Raleigh, NC, 3North Carolina Department of Health and Human Services, North Carolina Division of Public Health, Winston-Salem, NC, 4Division of Infectious Diseases, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC

Felicia Lewis, MD¹, Michael Eberhart, MPH², Greta Anschuetz, MPH³, Melinda Salmon, BA³, Coleman Terrell, BA² and Kathleen Brady, MD², 1Division of STD Prevention, Centers for Disease Control and Prevention and Philadelphia Department of Public Health, Philadelphia, PA, 2AIDS Activities Coordinating Office, Philadelphia Department of Public Health, Philadelphia, PA, 3STD Control Program, Philadelphia Department of Public Health, Philadelphia, PA