Details of Ethics Approval
This study was approved by the institutional review boards of Kagoshima City Hospital on January 21 2021 (number [no.]: 2020-62) and Kagoshima University Hospital on March 24, 2021 (no. 200289), and was conducted in accordance with the 2013 Declaration of Helsinki. We announced this study in displays and the homepage of each hospital and provided an optout option for patients. The STROBE statement was followed.