Funding for this research was provided by:
a Grant-in-Aid from the Ministry of Education, Science, Technology, Sports and Culture of Japan (15K08432)
Received: 5 September 2017
Accepted: 19 January 2018
First Online: 8 February 2018
: All animal experiments were approved by the Institutional Animal Care and Use Committee at the Toin University of Yokohama under the protocol reference number D29-16.
: Not applicable.
: The authors declare that we have no competing interests.
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