[1] Kings Coll London, Sch Med, Div Canc Studies, Sect Canc Epidemiol, London SE1 9RT, England
[2] Uppsala Univ, Dept Surg Sci, Univ Uppsala Hosp, S-75185 Uppsala, Sweden
[3] Kings Coll London, Thames Canc Registry, London SE1 3QD, England
[4] Univ Uppsala Hosp, Reg Oncol Ctr, S-75185 Uppsala, Sweden
[5] Canc Registry Norway, Dept Registry Based Res, Oslo, Norway
[6] Int Agcy Res Canc, Canc Informat Sect, F-69372 Lyon 08, France
[7] Canc Registry Norway, Dept Clin & Registry Based Res, Oslo, Norway
[8] Natl Board Hlth & Welf, Swedish Canc Registry, S-10630 Stockholm, Sweden
[9] Univ Leicester, Dept Hlth Sci, Ctr Biostat & Genet Epidemiol, Leicester LE1 7RH, Leics, England
[10] Karolinska Inst, Dept Med Epidemiol & Biostat, S-17177 Stockholm, Sweden
[11] Karolinska Inst, CLINTEC Dept, Karolinska Univ Hosp S3 00, Ctr Oncol, S-17176 Stockholm, Sweden
[12] Univ Oxford, John Radcliffe Hosp, Nuffield Dept Surg Sci, Oxford OX3 9DU, England
[13] Univ Sheffield, Royal Hallamshire Hosp, Acad Urol Unit, Sheffield S10 2JF, S Yorkshire, England