Funding for this research was provided by:
Japan Society for the Promotion of Science (JSPS) KAKENHI (17K10961)
Received: 1 July 2019
Accepted: 31 January 2020
First Online: 10 February 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee at Toyama University Hospital (Clinical research number 21–22). Patients provided written consent for participation in this analysis.
: Not applicable.
: The authors declare that they have no competing interests.