Received: 13 September 2020
Accepted: 15 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the ethical committee of Kanazawa University (2019–314(3327)). All study methods were conducted in accordance with the Declaration of Helsinki. Preoperative written informed consent was obtained from the patients prior to the collection of clinical data from their medical records.
: Not applicable.
: The authors declare that there are no conflicts of interest relevant to the content of this study.