[1] Tata Mem Hosp, ACTREC, Dept Radiat Oncol, Mumbai, Maharashtra, India
[2] Med Univ Vienna, Dept Radiat Oncol, Vienna, Austria
[3] Aarhus Univ, Dept Oncol, Aarhus, Denmark
[4] Homi Bhabha Canc Hosp, Dept Radiat Oncol, Varanasi, Uttar Pradesh, India
[5] Tata Mem Hosp, Dept Radiat Oncol, Mumbai, Maharashtra, India
[6] Homi Bhabha Canc Hosp & Res Ctr, Dept Radiat Oncol, Vishakapatnam, India