1. Department of Oral and Maxillofacial Surgery Kakogawa Central City Hospital Kakogawa Japan
2. Department of Oral and Maxillofacial Surgery Kobe University Graduate School of Medicine Kobe Japan
3. Department of Oral Health and Diagnostic Sciences, School of Dental Medicine University of Connecticut Health Farmington Connecticut USA
4. Department of Reconstructive Sciences, School of Dental Medicine University of Connecticut Health Farmington Connecticut USA