Funding for this research was provided by:
Grant-in-Aid for Scientific Research (16H05553)
Grant-in-Aid for Challenging Exploratory Research (25670805)
Text and Data Mining valid from 2019-02-07
Received: 27 September 2018
Accepted: 22 January 2019
First Online: 7 February 2019
: The experimental procedures were approved by the Ethical Review Board of Tohoku University Graduate School of Dentistry approval number 26–27.
: Not applicable.
: The authors declare that they have no competing interests.
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