[1] German Canc Res Ctr, Heidelberg, Germany
[2] Heidelberg Univ, Dept Internal Med 4, Heidelberg, Germany
[3] Univ Calif San Francisco, Gladstone Inst Virol & Immunol, San Francisco, CA 94143 USA
[4] Univ Cagliari, Inst Occupat Med, Cagliari, Italy
[5] Dijon Univ Hosp, Unit Biol Haematol, Hematol, Dijon, France
[6] Univ Coll Dublin, Dept Publ Hlth, Publ Hlth, Dublin, Ireland
[7] Masaryk Mem Canc Inst, Canc Epidemiol & Genet, Brno, Czech Republic
[8] Tampere Univ Hosp, Pathol, Tampere, Finland
[9] Inst Catala Oncol, Serv Epidemiol & Registre Canc, Barcelona, Spain
[10] Int Agcy Res Canc, Lyon, France