Funding for this research was provided by:
Japan Agency for Medical Research and Development (160110001j0101)
Text and Data Mining valid from 2019-08-09
Received: 24 July 2018
Accepted: 6 August 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: Not applicable.
: The consent for publication is not relevant to this study.
: The authors declare that they have no competing interests.