1. Department of Medical Oncology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
2. Clinical Research Center, Kindai University Hospital, Osaka-Sayama, Japan
3. Department of Medical Oncology and Respiratory Medicine, National Hospital Organization Osaka Minami Medical Center, Kawachinagano, Japan
4. Department of Medical Oncology, Kishiwada City Hospital, Kishiwada, Japan
5. Department of Medical Oncology, Izumi Municipal Hospital, Izumi, Japan