1. Department of Gastroenterology and Hepatology, Graduate School of Medicine Hokkaido University Sapporo Japan
2. Department of Cancer Chemotherapy Hokkaido University Hospital Cancer Center Sapporo Japan
3. Department of Dermatology, Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
4. Department of Medical Oncology, Graduate School of Medicine Hokkaido University Sapporo Japan
5. Departments of Urology Hokkaido University Hospital Sapporo Japan
6. Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
7. Department of Hematology, Faculty of Medicine, Graduate School of Medicine Hokkaido University Sapporo Japan
8. Department of Otolaryngology – Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan