Article History
Received: 16 October 2020
Revised: 12 February 2021
Accepted: 29 March 2021
First Online: 12 April 2021
Compliance with ethical standards
:
: The microhooks used were co-developed by MT and Inami & Co., Ltd, Tokyo, Japan, and provided by Inami & Co., Ltd. MT receives royalties from Inami & Co., Ltd. The other authors have no competing interests in this study.
: The institutional review board of Shimane University Hospital approved the study, which did not require that each patient provide written informed consent; instead the protocol was posted at the study institutions to notify participants about the study.