KAMEI Kazutoshi (Japan Organization of Occupational Health and Safety Yokohama Rosai Hospital, Dept. Oral and Maxillofacial Surgery, Div. Oral and Maxillofacial Reconstructive Surgery)

KOBAYASHI Tadaharu (Division of Reconstructive Surgery for Oral and Maxillofacial Region, Niigata University Graduate School of Medical and Dental Sciences)