1. Gustave Roussy, Villejuif, France;
2. Department of Clinical Oncology, The University of Hong Kong, Hong Kong, Hong Kong;
3. Institut Gustave Roussy, Villejuif, France;
4. University of Hong Kong–Shenzhen Hospital, Hong Kong, China;
5. Sun Yat-sen University Cancer Center, Guangzhou, China;
6. State Key Laboratory of translational oncology, Hong Kong Cancer Institute, The Chinese University of Hong Kong, Shatin, China;
7. National Taiwan University Hospital, Taipei, Taiwan;
8. Department of Oral and Maxillofacial Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China;
9. National Cancer Centre, Singapore, Singapore;
10. Queen Elizabeth Hospital, Hong Kong, China;
11. State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China;
12. Hellenic Cooperative Oncology Group (HeCOG), Athens, Greece;
13. Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland;
14. Biostatistics and Epidemiology, Gustave-Roussy Cancer Campus, Paris-Saclay and Paris-Sud Universities, Villejuif, France;