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Article History
Received: 24 September 2021
Accepted: 5 January 2022
First Online: 15 January 2022
Declarations
:
: The authors have no conflicts of interest to declare.
: The study protocol conformed to the Guidelines for Epidemiologic Studies issued by the Ministry of Health, Labor, and Welfare of Japan. This study was approved by our hospital’s institutional review board (#1417; February 10, 2021), which waived the requirement of written informed consent. This study complied with the principles of the Declaration of Helsinki. The manuscript adheres to the applicable Strengthening the Reporting of Observational studies in Epidemiology guidelines.
