Funding for this research was provided by:
Japan Society for the Promotion of Science (18H02763)
Received: 29 January 2020
Accepted: 19 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: The protocol of this study was approved by the Ethics Committee of University of Fukui, Faculty of Medical Sciences (#20170225). Written informed consent was obtained from each patient.
: Not applicable.
: The authors declare that they have no competing interests.