1. Department of Medical Oncology; Kobe City Medical Center General Hospital; Kobe Japan
2. Department of Respiratory Medicine; Kurashiki Central Hospital; Kurashiki Japan
3. Department of Thoracic Oncology; Osaka International Cancer Institute; Osaka Japan
4. Department of Thoracic Oncology; Toneyama National Hospital, National Hospital Organization; Toyonaka Japan
5. Department of Respiratory Medicine; Kobe University Graduate School of Medicine; Kobe Japan
6. Department of Biomedical Statistics and Bioinformatics; Kyoto University Graduate School of Medicine; Kyoto Japan
7. Department of Medical Oncology; Takarazuka City Hospital; Takarazuka Japan