Received: 19 September 2020
Accepted: 16 February 2021
First Online: 27 February 2021
Ethics approval and consent to participate
: This study was approved by the ethics committee of Tokai University. The authors state that this study conforms to the ethical standards laid down in the most recent version of the Declaration of Helsinki. All patients were informed about the study and consented to participate.
: All patients gave consent for publication.
: The authors declare that there are no conflicts of interest.