Funding for this research was provided by:
Japan Society for the Promotion of Science (17H02184)
Text and Data Mining valid from 2019-05-13
Received: 12 February 2019
Accepted: 15 April 2019
First Online: 13 May 2019
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki (2000) and was approved by the Hyogo College of Medicine Ethics Committee (No. 3003 in 2018).
: All authors approved publication of this final version of the article.
: The authors declare that they have no competing interests.
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