Ishiwata, Tsukasa
Gregor, Alexander
Inage, Terunaga
Yasufuku, Kazuhiro
Article History
Received: 21 October 2019
Accepted: 23 October 2019
First Online: 4 November 2019
Compliance with ethical standards
:
: Kazuhiro Yasufuku received research funding from Olympus Corporation and Zidan Medical Inc.