Melina Boudov, MA¹, Jane Steinberg, PhD, MPH¹, Michael Chien, PhD, (c)¹ and Raymond Perry, MD, MPH², 1Division of HIV/STD Programs, Los Angeles County Department of Public Health, Los Angeles, CA, 2Los Angeles County Department of Health Services

Eric PF Chow, PhD, Glenda Fehler, BSc, Marcus Chen, PhD, Catriona Bradshaw, PhD and Christopher Fairley, PhD, Melbourne Sexual Health Centre, The Alfred Hospital, Melbourne, Australia

Michel Alary, MD, PhD¹, Sharmishta Mishra, MD, MSc², Stephen Moses, MD, MPH³, Marie-Claude Boily, PhD⁴, John Williams, PhD⁴, Andrea Low, MD⁵, Marissa Becker, MD, MSc³, Peter Vickerman, PhD⁵ and James Blanchard, MD, MPH, PhD³, 1Population Health and Optimal Health Practices Research Unit, CHU-HSS, Québec, QC, Canada, 2St. Michael's Hospital, University of Toronto, Toronto, ON, Canada, 3Centre for Global Public Health, Department of Community Health Sciences, University of Manitoba, Winnipeg, MB, Canada, 4Department of Infectious Disease Epidemiology, Imperial College, London, United Kingdom, 5London School of Hygiene and Tropical Medicine, London, United Kingdom

Don Des Jarlais, PhD¹, Kamyar Arasteh, PhD¹, Courtney McKnight, MPH¹, Jonathan Feelemyer, M.S.¹, Holly Hagan, PhD², Hanna Cooper, PhD³ and David Perlman, MD¹, 1Baron Edmond de Rothschild Chemical Dependency Institute, Beth Israel Medical Center, New York, NY, 2College of Nursing, New York University, New York, NY, 3Rollins School of Public Health, Emory University, Atlanta, GA

Susan Blank, MD, MPH¹, Christine Borges, MPH², Preeti Pathela, DrPH, MPH¹, Sarah Braunstein, PhD, MPH³, Colin Shepard, MD⁴ and Julia Schillinger, MD, MSc⁵, 1Bureau of STD Control and Prevention, New York City Department of Health and Mental Hygiene, Long Island City, NY, 2Bureau of STD Control and Prevention, Department of Health and Mental Hygiene, Long Island City, NY, 3HIV Epidemiology and Field Services, New York City Department of Health and Mental Hygiene, Long Island City, NY, 4Bureau of HIV/AIDS Prevention and Control, New York City Department of Health and Mental Hygiene, New York City, NY, 5Bureau of Sexually Transmitted Disease Control, NYC Department of Health & Mental Hygiene, Division of Sexually Transmitted Disease Prevention, Centers for Disease Control and Prevention, Queens, NY