1. Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Suita Osaka Japan
2. Division of Comprehensive Prosthodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
3. Osaka University; Suita Osaka Japan
4. Department of Preventive Cardiology; National Cerebral and Cardiovascular Center; Suita Osaka Japan