Received: 15 August 2020
Accepted: 25 March 2021
First Online: 6 April 2021
: Ethical approval was provided by the Ethics Committee of The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, China (approval number: 2019-SR-505) on December 25, 2019. The requirement for written informed consent was waived due to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.