Received: 6 August 2020
Accepted: 2 November 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: This study complied with the requirements of the Ethics Committee of Fujian Medical University and adhered to the Declaration of Helsinki. Informed consent was waived due to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.