[1] Int Agcy Res Canc, F-69008 Lyon, France
[2] Univ Padua, Dept Environm Med & Publ Hlth, Padua, Italy
[3] Univ Tartu, Inst Mol & Cell Biol, Estonian Bioctr, Tartu, Estonia
[4] Univ Tartu, Estonian Genome Project, Tartu, Estonia
[5] Univ Athens, Sch Med, GR-11527 Athens, Greece
[6] Harvard Univ, Sch Publ Hlth, Boston, MA 02115 USA
[7] Univ Bremen, Bremen Inst Prevent Res & Social Med, Bremen, Germany
[8] Univ Turin, Turin, Italy
[9] Ctr Expt Res & Med Studies, Unit Canc Epidemiol, Turin, Italy
[10] Aviano Canc Ctr, I-33081 Aviano, Italy
[11] Gen Hosp Pordenone, Pordenone, Italy
[12] Univ Aberdeen, Sch Med, Aberdeen AB9 2ZD, Scotland
[13] Charles Univ Prague, Fac Med 1, Inst Hyg & Epidemiol, Prague, Czech Republic
[14] Inst Natl Sante & Rech Med, U794, Paris, France
[15] Inst Gustave Roussy, CNRS, FRE2939, Villejuif, France
[16] Canc Registry, Geneva, Switzerland
[17] Canc Registry Norway, Oslo, Norway
[18] Univ Newcastle, Newcastle Upon Tyne, Tyne & Wear, England
[19] Inst Catala Oncol, Barcelona, Spain
[20] Univ Glasgow, Sch Dent, Glasgow, Lanark, Scotland
[21] Natl Serv Scotland, Informat Serv Div, Natl Hlth Serv, Edinburgh, Midlothian, Scotland
[22] Univ Leeds, Leeds, W Yorkshire, England
[23] Croatian Natl Inst Publ Hlth, Croatian Natl Canc Registry, Zagreb, Croatia
[24] Univ Dublin Trinity Coll, Sch Dent Sci, Dublin 2, Ireland