Matsuoka, Tadashi http://orcid.org/0000-0002-3837-8960
Ichihara, Nao
Shinozaki, Hiroharu
Kobayashi, Kenji
Lefor, Alan Kawarai
Kimura, Toshimoto
Kitagawa, Yuko
Kakeji, Yoshihiro
Miyata, Hiroaki
Sasaki, Junichi
Funding for this research was provided by:
Japanese Society for Abdominal Emergency Medicine
Article History
Received: 20 April 2021
Accepted: 18 May 2021
First Online: 27 May 2021
Declarations
:
: This study was approved by the Institutional Review Board of Saiseikai Utsunomiya Hospital (No. 2018-15). The requirement for obtaining informed consent from patients was waived because the data sets were anonymous.
: Informed consent was waived because of the anonymous nature of the data.
: T.M., H.S., K.K., A.K.L., T.K., Y.K., Y.K., and J.S. declare no competing interests.N.I. and H.M. are affiliated with the Department of Healthcare Quality Assessment, which is a social collaboration department at the University of Tokyo supported by National Clinical Database, Johnson & Johnson K.K., and Nipro Corporation.