1. Division of Plastic and Reconstructive Surgery, Organized Center of Clinical Medicine; International University of Health and Welfare; Tochigi Japan
2. Department of Pathology; Saitama Medical School; Saitama Japan
3. Department of Anatomy; Graduate School of Medicine, Osaka City University; Osaka Japan
4. Department of Anatomy; Saitama Medical School; Saitama Japan
5. Department of Molecular Pathology; Graduate School of Medicine, University of Tokyo; Tokyo Japan