1. School of Health Sciences , Universiti Sains Malaysia , Kelantan , Malaysia
2. Division of Radiation Oncology , Kobe University Graduate School of Medicine , Kobe , Japan
3. Faculty of Health Sciences , Hiroshima International University , Hiroshima , Japan
4. Hyogo Ion Beam Medical Centre , Hyogo , Japan
5. Medical Radiation Discipline, School Medical Sciences , RMIT University , Victoria , Australia
6. School of Materials and Mineral Resources Engineering , Universiti Sains Malaysia , Penang , Malaysia