1. Department of Plastic and Reconstructive Surgery; Hokkaido University Graduate School of Medicine; Sapporo Hokkaido Japan
2. Division of Immunobiology; Institute for Genetic Medicine; Hokkaido University; Sapporo Hokkaido Japan
3. Department of Oral and Maxillofacial Surgery; Hokkaido University Graduate School of Dental Medicine; Sapporo Hokkaido Japan