1. Department of Oral and Maxillofacial Surgery, Division of Clinical Medicine, Graduate Faculty of Interdisciplinary Research; University of Yamanashi, 1110 Shimokato; Chuo Yamanashi Japan
2. Depatment of Medical Institure; Takiron Co. Ltd, 7-1-9, Minatojimaminamimachi, Chuo-ku; Kobe Hyogo Japan
3. Suwa factory ORC Manufacturing Co., Ltd, 4896 Tamagawa; Chinoshi Nagano Japan