Funding for this research was provided by:
Japan Society for the Promotion of Science (17H02184)
Text and Data Mining valid from 2019-07-27
Received: 5 March 2019
Accepted: 11 July 2019
First Online: 27 July 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 for publication this final version of the article.
: The authors declare that they have no competing interests.