Funding for this research was provided by:
Beijing Municipal Administration of Hospitals (DFL20180701, 2017400003235J007)
Beijing Shijitan Hospital, Capital Medical University (2016fmzlwk)
Beijing Municipal Science and Technoloy Commission (Z161100000516077)
Natural Science Foundation of Beijing Municipality (7172108)
Shanghai Municipal Health Bureau (2018-TG-27)
Article History
Received: 9 June 2020
Accepted: 10 July 2020
First Online: 22 July 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.