[1] Gustave Roussy Canc Campus, Radiat Therapy, Villejuif, France
[2] Inst Gustave Roussy, Biostat, Villejuif, France
[3] NRG Oncol, Stat & Data Management Ctr, Philadelphia, PA USA
[4] Clin Univ St Luc, Radiat Oncol, Brussels, Belgium
[5] Univ Coll London Hosp UCLH NHS Fdn Trust, Radiat Oncol, London, England
[6] Yale Univ, Sch Med Med Oncol, Med Oncol, New Haven, CT USA
[7] Osped Angelo, Med Oncol, Venice, Italy
[8] Osped SS Giovanni & Paolo, Venice, Italy
[9] Inst Gustave Roussy, Head & Neck Surg, Villejuif, France
[10] Aarhus Univ Hosp, Radiat Oncol, Aarhus, Denmark
[11] Univ Michigan, Head & Neck Surg, Ann Arbor, MI 48109 USA
[12] Cty Hosp Ryhov, Radiat Oncol, Jonkoping, Sweden
[13] Hosp Univ Severo Ochoa, Med Oncol, Madrid, Spain
[14] IRCCS AOU San Martino IST Ist Nazl Ric Canc, Radiat Oncol, Genoa, Italy
[15] Campus Virchow Klinikum, Radiat Oncol, Charite, Berlin, Germany
[16] Univ S Florida, Radiat Oncol, H Lee Moffitt Canc Ctr, Tampa, FL USA
[17] EORTC Headquarters, Biostat, Brussels, Belgium
[18] Canc Res UK, Clin Trials, London, England
[19] UCL, Canc Trials Ctr, London, England
[20] CHU Vaudois, Oncol, Lausanne, Switzerland
[21] Univ Paris Saclay, Univ Paris Sud, Serv Biostat & Epidemiol, Ligue Canc,CESP,Inserm,U1018, Gustave Roussy Canc Campus, Villejuif, France