1. Department of Medical Technology, Faculty of Health Sciences, Kobe-Tokiwa University, Kobe 653-0838, Japan
2. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing 100142, PR China
3. Department of Pathology and Pathophysiology, Shandong University School of Medicine, Shandong 250012, PR China
4. Department of Human Pathology, Wakayama Medical University, Wakayama 641-8596, Japan
5. Department of Surgery, Kuma Hospital, Kobe 650-0011, Japan