Takashima, Yuta
Shinagawa, Naofumi
Morinaga, Daisuke
Nakamura, Junichi
Furuta, Megumi
Shoji, Tetsuaki
Asahina, Hajime
Kikuchi, Eiki
Kikuchi, Junko
Sakakibara-Konishi, Jun
Tsujino, Ichizo
Konno, Satoshi
Article History
Received: 7 July 2022
Accepted: 16 November 2022
First Online: 28 November 2022
Declarations
:
: This study was conducted in accordance with the Declaration of Helsinki and approved by the institutional review board (IRB) of Hokkaido University Hospital (Approval No. 021-0023). Since this is a retrospective study, informed consent was obtained in the form of opt-out on the website. This opt-out informed consent procedure was approved by the IRB of the Hokkaido University Hospital (Approval No. 021-0023). Those who declined to participate were excluded from the study.
: Not applicable.
: N.S. and S.K. received a research grant from Olympus and Olympus Medical Systems. I.T. and S.K. belong to an endowed department (Division of Respiratory and Cardiovascular Innovative Research) supported by Nihon Shinyaku, Nippon Boehringer Ingelheim, and Mochida Pharmaceutical. The other authors declare no competing interests in relation to this study.