[1] Univ Cambridge, Oncol Dept, Hills Rd, Cambridge CB2 0QQ, England
[2] Univ Perugia, Perugia, Italy
[3] Perugia Gen Hosp St Andrea Fratte, Perugia, Italy
[4] Inst Canc Res, Clin Trials & Stat Unit, London, England
[5] Maastricht Univ, GROW Sch Oncol & Dev Biol, Dept Radiat Oncol Maastro, Med Ctr, Maastricht, Netherlands
[6] Univ Hosp North Midlands, Stoke On Trent, Staffs, England
[7] Keele Univ, Stoke On Trent, Staffs, England
[8] Tata Med Ctr, Kolkata, India
[9] Peter MacCallum Canc Ctr, Melbourne, Vic, Australia
[10] Univ Melbourne, Sir Peter MacCallum Dept Oncol, Melbourne, Vic, Australia
[11] Univ Michigan, Dept Radiat Oncol, Ctr Bioeth & Social Sci Med, Ann Arbor, MI 48109 USA
[12] Sheba Tel Hashomer, Breast Radiat Unit, Ramat Gan, Israel
[13] Royal Marsden NHS Fdn Trust, London, England
[14] Inst Canc Res, London, England
[15] Stavanger Univ Hosp, Dept Hematol & Oncol, Stavanger, Norway
[16] Univ Florence, Dept Expt & Clin Biomed Sci, Florence, Italy
[17] Azienda Osped Univ Careggi, Oncol Dept, Radiat Oncol Unit, Florence, Italy
[18] Univ Hosp HM Sanchinarro, Madrid, Spain
[19] Hosp Sirio Libanes, Dept Radiat Oncol, Sao Paulo, Brazil
[20] Univ Sao Paulo, Fac Med, Inst Canc Estado Sao Paulo, Div Radiat Oncol,Dept Radiol & Oncol, Sao Paulo, Brazil
[21] Aarhus Univ Hosp, Dept Expt Clin Oncol, Aarhus, Denmark
[22] Paris Sci & Lettres Univ, Paris, France
[23] Dept Radiat Oncol, Gustave Roussy Canc Campus, Villejuif, France
[24] Univ Paris Saclay, Mol Radiotherapy & Innovat Therapeut, Gustave Roussy Canc Campus, Villejuif, France