1. Department of Medical Oncology/Hematology, Kobe University Graduate School of Medicine, Kobe, Japan;
2. Department of Cardiovascular Surgery, and Kobe University Graduate School of Medicine, Kobe, Japan;
3. Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Japan;
4. Department of Medical Oncology, Kinki University School of Medicine, Osaka, Japan