Funding for this research was provided by:
Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (17K18244)
Received: 30 April 2020
Accepted: 6 July 2020
First Online: 22 July 2020
Ethics approval and consent to participate
: All participants provided written informed consent before enrolment in the study, which was approved by the ethical committee of Kyoto Prefectural University (Approved number 175).
: Not applicable.
: The authors declare that they have no competing interests.