Funding for this research was provided by:
Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture, Sports, Science and Technology (18K09251, 15H04980)
Initiative for Realizing Diversity in the Research Environment of University of Toyama (not applicable)
Text and Data Mining valid from 2020-01-09
Received: 8 January 2019
Accepted: 30 December 2019
First Online: 9 January 2020
Ethics approval and consent to participate
: The present study was approved by the Ethics Committee of Toyama University Hospital (No.25–74). Written informed consent was obtained from study participants.
: Not applicable.
: The authors declare that they have no competing interests.