Pui Lam Yip1, 2, Wai Him B. Fung3, Ann Shing Lee1, Chak Fei Lee4, Sean Man Natalie Wong1 and Shing Fung Lee1, 2* 1Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, SAR China 2Department of Radiation Oncology, National University Cancer Institute, Singapore 3Department of Radiology and Nuclear Medicine, Tuen Mun Hospital, Hong Kong, SAR China 4Department of Pharmacy, Tuen Mun Hospital, Hong Kong, SAR China The final, formatted version of the article will be published soon.