[1] Queen Mary Wolfson Inst Prevent Med, Canc Res UK, Ctr Epidemiol Math & Stat, London, England
[2] Hemel Hempstead Hosp, W Hertfordshire NHS Trust, Hemel Hempstead HP2 4AD, Herts, England
[3] Ctr Leon Berard, INSERM, U 590, F-69373 Lyon, France
[4] Erasmus Univ, Med Ctr, Dept Publ Hlth, Rotterdam, Netherlands
[5] European Inst Oncol, Div Epidemiol & Biostat, Milan, Italy
[6] Canc Council Victoria, Canc Epidemiol Ctr, Melbourne, Vic, Australia
[7] Karolinska Inst, Dept Oncol Pathol, Stockholm, Sweden
[8] Erasmus Univ, Med Ctr, Dept Surg Oncol, Rotterdam, Netherlands
[9] Inst Jules Bordet, Unit Epidemiol & Prevent, B-1000 Brussels, Belgium
[10] Comprehens Canc Ctr S, IKZ, Eindhoven, Netherlands