Received: 14 September 2020
Accepted: 1 March 2021
First Online: 9 March 2021
: The study protocol was approved by the Ethics Committees of the Aichi Medical University (approval number 2018-H350, date: November 3, 2019). The need to obtain patients’ informed consent was waived due to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.