Received: 20 February 2021
Accepted: 28 August 2021
First Online: 16 September 2021
: This study obtained ethics approval from the Ethics Committee of the Okayama University, Okayama, Japan (K2001–004) with Good Clinical Practice (Declaration of Helsinki). Informed consent was waived by this Committee.
: Not Applicable. (All data was recorded anonymously and does not allow any inference to the participating persons.)
: None declared.