1. Department of Clinical Laboratory, Kuma Hospital, Kobe, Hyogo 650-0011, Japan
2. Department of Diagnostic Pathology and Cytology, Kuma Hospital, Kobe, Hyogo 650-0011, Japan
3. Department of Surgery, Kuma Hospital, Kobe, Hyogo 650-0011, Japan
4. Department of Internal Medicine, Kuma Hospital, Kobe, Hyogo 650-0011, Japan
5. Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan