1. Department of Orthopaedic Surgery; Graduate School of Medical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
2. Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
3. Department of Oral Maxillofacial Prosthodontics; Field of Oral and Maxillofacial Rehabilitation; Advanced Therapeutic Course; Graduate School of Medical and Dental Sciences; Kagoshima University; Sakuragaoka 8-35-1 Kagoshima 890-8544 Japan