Received: 28 January 2022
Accepted: 1 May 2022
First Online: 5 May 2022
: Ethical aspects of this study were reviewed and approved by the Ashikaga Red Cross Hospital Human Research Ethics Committee (2012–16). This study was performed after obtaining informed consent from all participants upon admission. For the patients who were < 18 years of age, informed consent was also obtained from that individual’s parents.
: Not applicable.
: The authors declare that they have no competing interests.