Received: 17 March 2021
Accepted: 23 September 2021
First Online: 13 October 2021
: This study was approved by the Ethics Committee of the Kitakyushu Municipal Medical Center and Tottori University Hospital. The authors declare that the all recruited patients provided completed and signed questionnaires to attending anesthesiologists, implying informed consent for the study, and that this work was conducted in accordance with the Declaration of Helsinki (1964) and its subsequent amendments.
: Informed consent for publication of clinical research was obtained from all patients.
: The authors declare no competing interests.