1. Research and Development Centre, Bharathiar University, Coimbatore-641046, Tamilnadu , India
2. Department of Radiation Oncology, United Hospital, Gulshan-2, Dhaka -1212, Bangladesh
3. Department of Radiotherapy, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Rai Bareilly Road, Lucknow-226014, Uttar Pradesh , India