1. Department of Legal Medicine; Graduate School of Medicine, Chiba University; 1-8-1 Inohana, Chuo-ku; Chiba city; Chiba; 260-8670; Japan
2. Department of Pathology; Teikyo University School of Medicine; 2-11-1 Koga, Itabashi-ku; Tokyo; 173-8605; Japan
3. Department of Diagnostic Pathology; Graduate School of Medicine, Chiba University; 1-8-1 Inohana, Chuo-ku; Chiba city; Chiba; 260-8670; Japan