1. Department of Pathology; Saiseikai Kawaguchi General Hospital; Kawaguchi Japan
2. Department of Surgical and Molecular Pathology; Dokkyo Medical University; Mibu Japan
3. Department of Pathology; Hitachi, Ltd. Hitachinaka General Hospital; Hitachinaka Japan
4. Department of Pathology; Saitama Medical University Saitama International Medical Center; Hidaka Japan