Funding for this research was provided by:
Ministry of Health, Labour and Welfare (20FC0201)
Received: 8 March 2022
Accepted: 13 August 2022
First Online: 20 August 2022
: This study was approved by the Ethics Committee of Kobe University Graduate School of Medicine (No. B210003), and performed in accordance with the Declaration of Helsinki. The Ethics Committee waived the obligation to obtain informed consent in this retrospective observational study. Instead, the information in this survey was disclosed on the hospital's homepage, so that patients could refuse to participate in the study as an opt-out choice.
: Not applicable.
: The authors declare that they have no competing interests.