Received: 11 January 2021
Accepted: 20 April 2021
First Online: 3 May 2021
: This study was conducted in accordance with the principles of the Declaration of Helsinki. The study protocol was reviewed and approved by the Ethical Committee for Clinical Research at Yokohama City University Medical Center (D1401017). All study participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.