Ando, Wataru
Takao, Masaki
Hamada, Hidetoshi
Uemura, Keisuke
Sugano, Nobuhiko http://orcid.org/0000-0003-4035-3989
Article History
Received: 5 January 2021
Accepted: 17 March 2021
First Online: 20 April 2021
Declaration
:
: This was a retrospective study and all procedures involving human participants were in accordance with the ethical standards of the institutional research committee in our institutions (the ethics committee of Osaka University Graduate School of Medicine, reference number: 18479) and the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All subjects in this study were informed of the study protocol and written informed consent to participate and publish was obtained.
: WA, MT and NS received the Speakers bureau/paid presentations for a company or supplier from Stryker. HH and KU declared no conflicts of interest to be stated for this study.