[1] Med Univ Vienna, AKH, Dept Obstet & Gynecol, Div Gynecol Oncol, A-1020 Vienna, Austria
[2] Rigshosp, Danish Canc Soc, Inst Canc Epidemiol, Dept Virus Hormones & Canc, DK-2100 Copenhagen, Denmark
[3] Univ New Mexico, Dept Mol Genet & Microbiol, Albuquerque, NM 87131 USA
[4] Univ New Mexico, Dept Obstet & Gynaecol, Albuquerque, NM 87131 USA
[5] Natl Canc Detect Clin, Reykjavik, Iceland
[6] Haukeland Hosp, Dept Obstet & Gynecol, N-5021 Bergen, Norway
[7] Univ Bergen, Dept Clin Med, Bergen, Norway
[8] Inst Publ Hlth, Cuernavaca, Morelos, Mexico
[9] Univ Rosario, Bogota, Colombia
[10] Indiana Univ, Sch Med, Dept Med, Indianapolis, IN USA
[11] Univ Washington, Dept Epidemiol, Seattle, WA 98195 USA
[12] KK Womens & Childrens Hosp, Singapore, Singapore
[13] Univ Peruana Cayetano Heredia, Epidemiol HIV & STD Unit, Lima, Peru
[14] Emory Univ, Sch Med, Dept Gynecol & Obstet, Atlanta, GA USA
[15] Univ Melbourne, Dept Obstet & Gynaecol, Melbourne, Vic, Australia
[16] Royal Hosp Women, Dept Microbiol & Infect Dis, Melbourne, Vic, Australia
[17] Danderyd Hosp, Karolinska Inst, Stockholm, Sweden
[18] Univ Hong Kong, Dept Obstet & Gynecol, Hong Kong, Hong Kong, Peoples R China
[19] Med Coll Georgia, Dept Family Med & Obstet & Gynecol, Augusta, GA 30912 USA
[20] Univ Cent Hosp, Dept Obstet & Gynaecol, Helsinki, Finland
[21] Univ Tampere, Sch Publ Hlth, FIN-33101 Tampere, Finland
[22] Inst Natl Sante Publ Quebec, Direct Risques Biol Environnementaux & Occupation, Montreal, PQ, Canada
[23] IDIBELL, Inst Catala Oncol, Barcelona, Spain
[24] Lund Univ, Dept Med Microbiol, S-22100 Lund, Sweden
[25] Johns Hopkins Univ, Sch Med, Dept Gynecol & Obstet, Baltimore, MD 21205 USA
[26] Johns Hopkins Univ, Sch Med, Dept Pathol & Oncol, Baltimore, MD USA
[27] Warsaw Med Univ, Dept Dermatol & Venerol, Ctr Diagnost & Treatment Sexually Transmitted Dis, Warsaw, Poland
[28] Natl Canc Inst, Bogota, Colombia
[29] Duke Univ, Med Ctr, Dept Obstet & Gynecol, Durham, NC 27710 USA
[30] Ludwig Inst Canc Res, Dept Virol, Sao Paulo, Brazil
[31] Merck Res Labs, West Point, PA USA