Received: 1 September 2021
Accepted: 7 February 2022
First Online: 15 February 2022
: The authors declare that they have no competing interests.
: All procedures followed were under the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. This study was approved by the research ethics committee of Toranomon Hospital (no. 2231). Informed consent was obtained from all patients in this study.
: Not applicable.