1. Division of Hematology and Oncology, Department of Internal Medicine National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University Tainan Taiwan
2. Department of Medical Oncology and Hematology Kobe University Hospital Kobe Japan
3. Cancer Center Kobe University Hospital Kobe Japan
4. Department of Head and Neck Surgery Aichi Cancer Center Hospital Nagoya Japan
5. Department of Medical Oncology Cancer Institute Hospital, Japanese Foundation for Cancer Research Tokyo Japan
6. Division of Gastrointestinal Oncology Shizuoka Cancer Center Shizuoka Japan
7. Department of Head and Neck Surgery Hyogo Cancer Center Akashi Japan
8. Department of Medical Oncology Hokkaido University Hospital Sapporo Japan
9. Department of Oncology National Taiwan University Hospital Taipei Taiwan
10. Cancer Chemotherapy Center Osaka Medical College Hospital Takatsuki Japan
11. Division of Medical Oncology, Department of Internal Medicine The Catholic University of Korea, Seoul St. Mary's Hospital Seoul Republic of Korea
12. Department of Clinical Oncology Queen Elizabeth Hospital Hong Kong China
13. UPMC Hillman Cancer Center University of Pittsburgh Medical Center Cancer Center Pittsburgh Pennsylvania USA
14. Department of Thoracic Head and Neck Medical Oncology, Division of Cancer Medicine MD Anderson Cancer Center Houston Texas USA
15. Section 1, Oncology Medical Affairs ONO Pharmaceutical Co., Ltd Osaka Japan
16. Oncology Clinical Development BMS, Bristol‐Myers Squibb Princeton New Jersey USA
17. Department of Head and Neck Medical Oncology National Cancer Center Hospital East Kashiwa Japan