[1] Inst Canc Res, London SW3 6JB, England
[2] Royal Marsden Hosp, London SW3 6JJ, England
[3] Inst Gustave Roussy, Villejuif, France
[4] Tata Mem Hosp, Bombay 400012, Maharashtra, India
[5] Ruby Hall Clin, Pune, Maharashtra, India
[6] Hop Forcilles, Paris, France
[7] St Petersburg City Oncol Dispensary, St Petersburg, Russia
[8] Szent Imre Univ Teaching Hosp, Budapest, Hungary
[9] Beijing Canc Hosp, Beijing, Peoples R China
[10] Hosp & Policlin Radiat Therapy & Radiooncol, Leipzig, Germany
[11] East Slovakia Canc Inst, Kosice, Slovakia
[12] Inst Radiat Oncol Hosp Na Bulovce, Prague, Czech Republic
[13] Charles Univ Prague, Fac Med 1, Prague, Czech Republic
[14] Univ Birmingham, Inst Head & Neck Studies & Educ, Birmingham, W Midlands, England
[15] Synta Pharmaceut Inc, Lexington, MA USA
[16] GlaxoSmithKline, Uxbridge, Middx, England
[17] GlaxoSmithKline, Philadelphia, PA USA
[18] CHU Vaudois, Lausanne, Switzerland