Affiliation: | 1. Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, TMDU, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan;2. Oral Diagnosis and General Dentistry, University Hospital of Dentistry, Tokyo Medical and Dental University, TMDU, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan |