1. Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Japan
2. Department of Clinical Oncology, Hamamatsu University School of Medicine, Japan
3. First Department of Medicine, Hamamatsu University School of Medicine, Japan
4. Department of Pathology, Hamamatsu University School of Medicine, Japan
5. Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, Japan