No Evidence of Sexual Risk Compensation in the iPrEx Trial of Daily Oral HIV Preexposure Prophylaxis - Marcus, Julia L.; Glidden, David V.; Mayer, Kenneth H.; Liu, Albert Y.; Buchbinder, Susan P.; Amico, K. Rivet; McMahan, Vanessa; Kallas, Esper Georges; Montoya-Herrera, Orlando; Pilotto, Jose; Grant, Robert M. (PLOS ONE, 2013)