1. Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606–8507, Japan.
2. Department of Plastic and Reconstructive Surgery, Kansai Medical University, 10–15 Fumizono-cho, Moriguchi, Osaka, 570–8507, Japan.