Hato, Hiroyuki
Sakata, Ken-ichiro
Sato, Jun
Asaka, Takuya
Ohga, Noritaka
Yamazaki, Yutaka
Kitagawa, Yoshimasa
Article History
Received: 2 June 2021
Accepted: 30 July 2021
First Online: 30 October 2021
Declarations
:
: This retrospective study was conducted with the approval of the Hokkaido University Hospital Independent Clinical Research Review Committee (Approval No. 019-0044) and waived the requirement for informed consent owing to the retrospective design.
: Not applicable.
: The authors declare that they have no competing interests.