A Web-Based Study of HIV Prevention in the Era of Pre-Exposure Prophylaxis Among Vulnerable HIV-Negative Gay and Bisexual Men, Transmen, and Transwomen Who Have Sex With Men: Protocol for an Observational Cohort Study

Denis Nash   ¹ , MPH, PhD ;   Matthew Stief   ¹ , PhD ;   Caitlin MacCrate   ¹ , MA ;   Chloe Mirzayi   ¹ , MPH ;   Viraj V Patel   ² , MPH, MD ;   Donald Hoover   ³ , MPH, PhD ;   David W Pantalone   ^{4, 5, 6} , PhD ;   Sarit Golub   ^{1, 7} , MPH, PhD ;   Gregorio Millett   ⁸ , MPH ;   Alexa B D’Angelo   ¹ , MPH ;   Drew Anne Westmoreland   ¹ , MSPH, PhD ;   Christian Grov   ¹ , MA, MPhil, MPH, PhD

¹ Institute for Implementation Science in Population Health, City University of New York, New York, NY, United States

² Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Albert Einstein College of Medicine, Bronx, NY, United States

³ Department of Statistics and Biostatistics, Rutgers University, New Brunswick, NJ, United States

⁴ Department of Psychology, University of Massachusetts, Boston, MA, United States

⁵ The Fenway Institute, Fenway Health, Boston, MA, United States

⁶ Center for Alcohol and Addiction Studies, Brown University, Providence, RI, United States

⁷ Hunter HIV/AIDS Research Team, Department of Psychology, Hunter College, City University of New York, New York, NY, United States

⁸ The Foundation for AIDS Research, New York, NY, United States