Yamagata, Akira http://orcid.org/0000-0001-6941-7152
Yokoyama, Toshihide
Fukuda, Yasushi
Ishida, Tadashi
Article History
Received: 8 July 2020
Accepted: 17 November 2020
First Online: 4 January 2021
Compliance with ethical standards
:
: TI has received honoraria from MSD K.K. The other authors declare that they have no conflict of interest.
: This study was approved by the institutional review board at Kurashiki Central Hospital (approval no. 3108).
: The requirement for consent to participate was waived because of the retrospective design of the study.
: The requirement for consent to publication was waived because of the retrospective design of the study.