Reasons for not Using HIV Pre-Exposure Prophylaxis (PrEP) among Gay and Bisexual Men in Australia: Mixed-Methods Analyses from a National, Online, Observational Study. - Philpot, Steven P.; Prestage, Garrett; Holt, Martin; Maher, Lisa; Haire, Bridget; Bourne, Adam; Hammoud, Mohamed A. (Behavioral Medicine, 2023)