Received: 16 October 2020
Accepted: 11 January 2021
First Online: 8 February 2021
Ethics approval and consent to participate
: All procedures involving human participants were conducted in accordance with the ethical standards of the 1964 Helsinki Declaration and its later amendments. The study was approved by the institutional review board of Tokyo Women’s Medical University (approval no.4713, March 28, 2018). All patients provided informed consent via opt-out.
: Not applicable.
: KK and YY are employees of Olympus Terumo Biomaterials Corp., which provided the TriS plate and Osferion60. KO received speaker honoraria from Olympus Terumo Biomaterials Corp.