Matsumura, Keisuke http://orcid.org/0000-0002-5802-393X
Sato, Yuji
Kitagawa, Noboru
Shichita, Toshiharu
Kawata, Daisuke
Ishikawa, Mariko
Article History
Received: 2 December 2017
Accepted: 27 April 2018
First Online: 4 May 2018
Authors’ information
: Keisuke Matsumura is a PhD student in the department of Geriatric Dentistry, University of Showa.
: This study was approved by the Showa University School of Dentistry ethics screening committee (No. 2015-015). Written informed consent was obtained from all participants.
: The authors declare that they have no competing interests.
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