James W. Carey, PhD, MPH, is an Epidemiologist within the Office of Science, Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA. Katherine B. Roland, MPH, is a Behavioral Scientist in the HIV Research Branch within the Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA. Patricia A. Bessler, MPH, is an Epidemiologist in the HIV Research Branch within the Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA. Casey Tesfaye, MA, is the Lead Project Manager at Research Support Services Inc, Evanston, Illinois, USA. Laura A. Randall, MPH, was a Project Director at the University of Nevada Las Vegas, Nevada, USA and at Emorhy University School of Medicine, Atlanta, Georgia, USA. Paula M. Frew, PhD, MA, MPH, was a Professor and Director at the UNLV Population Health & Health Equity Initiative; School of Public Health; School of Medicine, Las Vegas, Nevada, USA, and Associate Professor at Emory University School of Medicine, Atlanta, Georgia, USA, and Merck & Co., Inc., Kenilworth, New Jersey, USA.

*Corresponding author: James W. Carey, e-mail: [email protected]