Funding for this research was provided by:
the nachi-katsuura research foundation (L1221)
Grants-in-Aid for Scientific Research (21K11364)
Received: 24 September 2021
Accepted: 2 March 2022
First Online: 15 March 2022
: The study was conducted according to the guidelines of the Declaration of Helsinki and approved by the Institutional Review Board of Wakayama Medical University (protocol code #2049; date of approval: 27th June, 2017). All participants signed a consent form voluntarily before participating in the study. The right to withdraw consent at any time without stating the reason was guaranteed without any individual disadvantage for subsequent medical care.
: Not applicable.
: The authors declare that they have no competing interests.