[1] Governmen Catalonia, Minist Hlth, Ctr Epidemiol Studies Sexually Transmitted Infect, Badalona, Spain
[2] Univ Autonoma Barcelona UAB, Dept Pediat Obstet & Gynecol & Prevent Med, Doctorate Program Methodol Biomed Res & Publ Hlth, Badalona, Spain
[3] Germans Trias & Pujol Res Inst IGTP, Campus Can Ruti, Badalona, Spain
[4] Hosp Badalona Germans Trias & Pujol, Inst Invest Germans Trias & Pujol, Microbiol Dept, Lab Clin Metropolitana Nord, Badalona, Barcelona, Spain
[5] Inst Salud Carlos III, Biomed Res Ctr Network Epidemiol & Publ Hlth CIBER, Madrid, Spain
[6] ACASC, Barcelona, Spain
[7] Gais Positius, Barcelona, Spain
[8] Grp Trabajo Tratamientos VIH gTt VIH, Barcelona, Spain
[9] Publ Hlth Agcy Barcelona ASPB, Epidemiol Serv, Barcelona, Spain
[10] Autonomous Univ Barcelona, Dept Genet & Microbiol, Badalona, Spain
[11] Publ Hlth Agcy Catalonia, Programa Prevencio Control & Atencio Virus Immunod, Barcelona, Spain