1. Department of Pathology, Nara Hospital Kinki University Faculty of Medicine, Ikoma 630-0293, Japan
2. Department of Human Pathology, Wakayama Medical University, Wakayama, Japan
3. Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan
4. Department of Pathology, Ito Hospital, Tokyo, Japan
5. Department of Surgery, Kuma Hospital, Kobe, Japan
6. Department of Internal Medicine, Kuma Hospital, Kobe, Japan