Yaegashi, Mizunori
Otsuka, Koki
Kimura, Toshimoto
Matsuo, Teppei
Fujii, Hitoshi
Sato, Kei
Takashimizu, Kiyoharu
Hatanaka, Tomoki
Yoshida, Toru
Tono, Chihiro
Sasaki, Akira
Article History
Received: 23 May 2019
Accepted: 29 November 2019
First Online: 21 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This retrospective study was approved by the institutional review board of Iwate Medical University (IMU).
: This study was an observational study with no intervention.
: All patients provided their informed consent before the surgery. According to the institutional review board of IMU and based on the retrospective design of this study, we informed the public regarding the research program.