[1] Amethyst Radiotherapy Ctr, Dept Radiat Oncol, Cluj Napoca, Romania
[2] Apollo Hosp, Dept Radiotherapy, Kolkata, India
[3] A Tsyb Med Radiol Res Ctr, Dept Radiotherapy, Obninsk, Russia
[4] Univ Med & Pharm, Dept Radiat Oncol, Cluj Napoca, Romania
[5] Univ Calif San Francisco, Dept Radiat Oncol, San Francisco, CA USA
[6] Princess Margaret Hosp, Dept Surg, Hong Kong, Peoples R China
[7] Oncosalud AUNA, Dept Radiotherapy, Lima, Peru
[8] Sisters Charity Hosp, Dept Radiat Oncol, Zagreb, Croatia
[9] Maria Sklodowska Curie Natl Res Inst, Dept Radiat Oncol, Warsaw, Poland
[10] Crown Princess Mary Canc Ctr, Dept Radiat Oncol, Westmead, NSW, Australia
[11] Univ Geneva, Dept Radiat Oncol, Geneva, Switzerland
[12] Iridium Netwerk, Dept Radiat Oncol, Antwerp, Belgium
[13] Univ Calif San Francisco, Dept Radiat Oncol, San Francisco, CA USA
[14] Helen Diller Family Comprehens Canc Ctr, Dept Radiat Oncol, San Francisco, CA USA