Funding for this research was provided by:
Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (26462689)
Text and Data Mining valid from 2018-09-10
Received: 24 April 2018
Accepted: 4 September 2018
First Online: 10 September 2018
Ethics approval and consent to participate
: The Ethics Committee of Kagawa University Faculty of Medicine approved the study protocol.
: Not applicable.
: The authors declare that they have no competing interests.
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