[1] IDIBELL, Catalan Inst Oncol, Inst Catala Oncol, Canc Epidemiol Res Programme,Unit Infect & Canc U, Ave Gran Via 199-203, Barcelona 08908, Spain
[2] Sci Inst Publ Hlth, Unit Canc Epidemiol, Brussels, Belgium
[3] Int Agcy Res Canc, 150 Cours Albert Thomas, F-69372 Lyon, France
[4] Univ Reims, Ctr Hosp Univ CHU Reims, Reims, France
[5] INSERM, UMR S 903, Reims, France
[6] Ctr Canc Prevent CPO, Canc Epidemiol Unit, Turin, Italy
[7] Karolinska Inst, Dept Lab Med, Stockholm, Sweden
[8] Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden
[9] Univ Tampere, Sch Hlth Sci, FIN-33101 Tampere, Finland
[10] Klinikum Wolfsburg, Dept Obstet & Gynaecol, Wolfsburg, Germany
[11] Univ Ljubljana, Fac Med, Inst Microbiol & Immunol, Ljubljana, Slovenia
[12] Danish Canc Soc, Res Ctr, Virus Lifestyle & Genes, Copenhagen, Denmark
[13] Univ Copenhagen, Rigshosp, Dept Gynaecol, DK-2100 Copenhagen, Denmark
[14] Vrije Univ Amsterdam, Med Ctr, Dept Pathol, Amsterdam, Netherlands
[15] Royal Hosp Women, Dept Microbiol & Infect Dis, Parkville, Vic, Australia
[16] Univ Melbourne, Murdoch Childrens Res Inst, Parkville, Vic 3052, Australia
[17] Univ Melbourne, Dept Obstet & Gynaecol, Parkville, Vic 3052, Australia
[18] Ctr Invest Salud Poblac, Inst Mexicano Seguro Social, Unidad Invest Epidemiol & Serv Salud, Inst Nacl Salud Publ, Cuernavaca, Morelos, Mexico
[19] CIBER Epidemiol & Salud Publ CIBERESP, Barcelona, Spain
[20] Queen Mary Univ London, Wolfson Inst Prevent Med, Ctr Canc Prevent, London, England