Received: 17 March 2022
Accepted: 10 July 2022
First Online: 1 August 2022
: The study protocol was approved by the Institutional Review Board of Tokyo Women's Medical University (approval number:5764), and the study was performed in accordance with the Declaration of Helsinki and its amendments. The requirement for informed consent was waived due to the retrospective nature of data collection.
: Not applicable.
: The authors declare that they have no competing interests.