Article History
Received: 9 November 2021
Accepted: 10 November 2021
First Online: 23 November 2021
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study protocol was approved by the Kochi University Hospital Research Ethics Committee (Kochi, Japan) (#31–13), and waiver of consent was sought and obtained for this observational study with no unique patient identifiers.
: The authors declare no competing interests.