Funding for this research was provided by:
Beijing Medical Management Center Cultivation plan (PX2020071)
National Natural Science Foundation of China (81672000)
Thirteen-Fifth Key Project (2018ZX10715-005)
Beijing Hospital Authority “Dengfeng” Talent Training Plan (DFL20191802)
Received: 16 August 2020
Accepted: 30 October 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: The study was approved by Beijing Ditan hospital of Capital Medical University Ethics Committee. Written consent forms were obtained from the patients after gave them appropriate information.
: Not applicable.
: The authors declare that they have no competing interests.