Mitsuzawa, Kunihiro
Kumagai, Tsukasa
Uchida, Haruo
Shimizu, Toshiyuki
Article History
Received: 4 June 2023
Accepted: 18 November 2023
First Online: 25 November 2023
Declarations
:
: This study was approved by Shinshu Medical Center Institutional Review Board (Suzaka, Nagano, Japan, IRB #2–23) on 05/10/2020 and registered at the University hospital Medical Information Network (UMIN) Clinical Trials (UMIN000043317, principal investigator: Kunihiro Mitsuzawa) on 15/02/2021. Because this was a retrospective study and it was not able to provide informed consent to all participants in this study, Shinshu Medical Center Institutional Review Board waived the requirement for individual written informed consent. Study information was available on the hospital website and hospital bulletin board allowing participants the opportunity to opt‐out. All the procedures were followed in accordance with Declaration of Helsinki and recommended Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines.
: Not applicable.
: The authors declare no competing interests.