Utano, Kenichi
Nagata, Koichi
Honda, Tetsuro
Kato, Takashi
Lefor, Alan Kawarai
Togashi, Kazutomo http://orcid.org/0000-0002-4080-5335
Article History
Received: 12 June 2021
Accepted: 23 September 2021
First Online: 11 October 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study were in accordance with the ethical standards of the institutional and with the Helsinki Declaration. Written informed consent was obtained from all patients. The study protocol was approved by the Institutional Review Board of all seven participating institutions (Jichi Medical University, Kameda Medical Center Makuhari, Nagasaki Kamigoto Hospital, Hokkaido Gastroenterology Hospital, Matsuda Hospital, Kameda Medical Center and Otaru Kyokai Hospital).