Funding for this research was provided by:
Key Research and Development Program of Gansu (No. 17YF1FA128)
Lanzhou Science and Technology Bureau Innovation and Entrepreneurship Talent Program (No. 2017-RC-37)
Received: 17 September 2020
Accepted: 16 December 2020
First Online: 12 January 2021
Ethics approval and consent to participate
: The study was approved by the ethics committee of the First Hospital of Lanzhou University, and all included patients signed informed consent forms.
: The authors agrees to publication in the journal.
: The authors declare that they have no conflicts of interest.