Calabrese, Sarah K., Manya Magnus, Kenneth H. Mayer, Douglas S. Krakower, Adam I. Eldahan, Lauren A. Gaston Hawkins, Nathan B. Hansen, Trace S. Kershaw, Kristen Underhill, Joseph R. Betancourt et al. "Putting PrEP into Practice: Lessons Learned from Early-Adopting U.S. Providers' Firsthand Experiences Providing HIV Pre-Exposure Prophylaxis and Associated Care." PloS one 11, no. 6 (2016): e0157324.