Shibuya, Soichi https://orcid.org/0000-0002-4274-1312
Fujiwara, Naho
Ochi, Takanori
Wada, Momoko
Takahashi, Toshiaki
Lee, Kyeong Deok
Miyazaki, Eiji
Article History
Received: 7 February 2018
Accepted: 4 January 2019
First Online: 14 January 2019
Ethics approval and consent to participate
: Approval for this study was provided by The Institutional Review Board of Seirei Hamamatsu General Hospital (# 1992).The consent to participate from the patients was waived by The Institutional Review Board of Seirei Hamamatsu General Hospital due to the retrospective and non-interventional nature of the study. All the surgical trainees accepted to participate in the study as co-authors.
: Not applicable.
: The authors declare that they have no competing interests.
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