[1] Univ Oxford, Canc Epidemiol Unit, Nuffield Dept Clin Med, Div Med Sci, Oxford OX3 7LF, England
[2] German Canc Res Ctr, Div Canc Epidemiol, D-6900 Heidelberg, Germany
[3] Univ Tromso, Inst Community Med, Tromso, Norway
[4] Aarhus Univ, Dept Epidemiol, Sch Publ Hlth, Aarhus, Denmark
[5] Danish Canc Soc, Inst Canc Epidemiol, Copenhagen, Denmark
[6] Inst Natl Sante & Rech Med, Unite 1018, Villejuif, France
[7] Hop Tenon, Obstet Gynecol & Reprod Med Unit, F-75970 Paris, France
[8] Univ Paris 06, Dept Human Reprod Genet & Therapy, Paris, France
[9] Ctr Prevenz Oncol Piemonte, Dept Biomed Sci & Human Oncol, Turin, Italy
[10] Fdn IRCCS Ist Nazl Tumori, Nutrit Epidemiol Unit, Dept Prevent & Predict Med, Milan, Italy
[11] Canc Res & Prevent Inst, Mol & Nutrit Epidemiol Unit, Florence, Italy
[12] Civile MP Arezzo Hosp, Canc Registry & Histopathol Unit, Ragusa, Italy
[13] Univ Naples Federico II, Dept Clin & Expt Med, Naples, Italy
[14] German Inst Human Nutr Potsdam Rehbrucke, Dept Epidemiol, Nuthetal, Germany
[15] Natl Inst Publ Hlth & Environm, NL-3720 BA Bilthoven, Netherlands
[16] Univ Med Ctr Utrecht, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[17] Univ Med Ctr Utrecht, Div Biomed Genet, Dept Med Genet, Complex Genet Sect, Utrecht, Netherlands
[18] Basque Govt, Publ Hlth Div Gipuzkoa, San Sebastian, Spain
[19] Publ Hlth Inst Navarra, Pamplona, Spain
[20] Murcia Reg Hlth Author, Dept Epidemiol, Murcia, Spain
[21] Andalusian Sch Publ Hlth, Granada, Spain
[22] CIBER Epidemiol & Salud Publ, Barcelona, Spain
[23] Hlth & Hlth Care Serv Council, Publ Hlth & Participat Directorate, Asturias, Spain
[24] Catalan Inst Oncol, Canc Epidemiol Res Programme, Unit Nutr Environm & Canc, Barcelona, Spain
[25] Univ Cambridge, Dept Publ Hlth & Primary Care, Cambridge, England
[26] MRC Epidemiol Unit, Cambridge, England
[27] Int Agcy Res Canc, F-69372 Lyon, France
[28] Univ London Imperial Coll Sci Technol & Med, Fac Med, Dept Epidemiol & Publ Hlth, London, England