[1] Univ London Imperial Coll Sci Technol & Med, Fac Med, Ludwig Inst Canc Res, London W2 1PG, England
[2] Dept Med Oncol, I-12100 Cuneo, Italy
[3] Univ Birmingham, Inst Canc Studies, Canc Res UK Clin Trials Unit, Birmingham, W Midlands, England
[4] Bilkent Univ, Dept Mol Biol & Genet, Ankara, Turkey
[5] Azienda Osped S Croce & Carle, Dept Pathol, I-12100 Cuneo, Italy
[6] Univ Glasgow, Western Infirm, Dept Pathol, Glasgow G11 6NT, Lanark, Scotland
[7] Kings Coll London, Sch Med & Dent, London SE5, England
[8] Brunel Univ, Dept Biol, Uxbridge UB8 3PH, Middx, England