1 Centre of Epidemiological Studies on Sexually Transmitted Infections and AIDS of Catalunya (CEEISCAT), Department of Health. Government of Catalonia, Badalona, Barcelona, España; Biomedical Research Center Network for Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, España; Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruti, Badalona, Barcelona, España. Electronic address: cagusti@iconcologia.net.
2 EAP Florida Sud, ICS, L'Hospitalet de Llobregat, Barcelona, España; Catalan Society of Family and Community Medicine (CAMFiC), Barcelona, España; Spanish Society of Family and Community Medicine (semFYC), Barcelona, España; Department of Clinical Sciences, Facultat de Medicina, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, España.
3 Centre of Epidemiological Studies on Sexually Transmitted Infections and AIDS of Catalunya (CEEISCAT), Department of Health. Government of Catalonia, Badalona, Barcelona, España; Biomedical Research Center Network for Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, España; Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruti, Badalona, Barcelona, España; Department of Paediatrics, Obstetrics and Gynecology and Preventive Medicine, Universitat Autònoma de Barcelona, Badalona, Barcelona, España.