1. Division of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, 03722, South Korea
2. Seoul National University College of Medicine, Seoul, 03080, South Korea
3. Yale Cancer Center, Smilow Cancer Hospital, New Haven, CT 06510, USA
4. Cancer Center of People's Liberation Army, Nanjing, 210002, China
5. Osaka University, Suita, Osaka, 565-0871, Japan
6. National Cancer Center Hospital East, Kashiwa, 277-8577, Japan
7. Vall d'Hebron University Hospital & Institute of Oncology, Barcelona, 08035, Spain
8. University Hospitals Gasthuisberg Leuven & KU Leuven, Leuven, 03001, Belgium
9. Department of Medical Oncology, Merck & Co., Inc., Kenilworth, NJ 07033, USA
10. Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA