1. Divisions of Radiation Oncology and Medical Sciences, National Cancer Centre Singapore, Singapore
2. Oncology Academic Programme, Duke-NUS Medical School, Singapore
3. Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China,
4. Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
5. Department of Radiation Oncology, Institut de Cancérologie de l'Ouest, Nantes, St-Herblain, France
6. University of Nantes, Nantes, France