Text and Data Mining valid from 2019-10-15
Received: 11 March 2019
Accepted: 30 September 2019
First Online: 15 October 2019
Ethics approval and consent to participate
: All procedures performed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. This study was approved by the Institutional Review Board of Nagoya University (approval number 2017–0475) and written informed consent for surgery and usage of clinical data was obtained from all participants.
: Not applicable. Individual identifying data were not included in this manuscript.
: The authors declare that they have no competing interests.