Funding for this research was provided by:
Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (26861628)
Article History
Received: 4 September 2017
Accepted: 9 April 2018
First Online: 27 April 2018
Ethics approval and consent to participate
: The experimental procedures were approved by the Ethics Committee of Tokyo Medical and Dental University with registration number 232. All subjects provided written informed consent to participate in this study.
: The authors declare that they have no competing interests.
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