1. Department of Pulmonary Medicine and Oncology, Graduate School of Medicine, Nippon Medical School, Tokyo
2. Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo
3. Gunma Prefectural Cancer Center, Gunma
4. Yokohama Municipal Citizen’s Hospital, Yokohama
5. Hyogo Cancer Center, Akashi
6. KKR Sapporo Medical Center, Sapporo
7. Mitsui Memorial Hospital, Tokyo
8. Graduate School of Medicine, Chiba University, Department of Medical Oncology, Chiba, Japan