Received: 18 August 2020
Accepted: 23 November 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were following the ethics approval, which was obtained from the Institutional Review Board of the Fu Xing Hospital, Capital Medical University (Approval No. 201FXHEC-KY), and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: All authors declare that they have no conflict of interest.