In-depth Sampling of High-risk Populations to Characterize HIV Transmission Epidemics Among Young MSM Using PrEP in France and Quebec. Chaillon, Antoine; Delaugerre, Constance; Brenner, Bluma; Armero, Alix; Capitant, Catherine; Nere, Marie Laure; Leturque, Nicolas; Pialoux, Gilles; Cua, Eric; Tremblay, Cecile; Smith, Davey M.; Goujard, Cecile; Meyer, Laurence; Molina, Jean Michel; Chaix, Marie Laure. Open Forum Infectious Diseases. 2019; 6: p.ofz080. doi:10.1093/ofid/ofz080Article