Funding for this research was provided by:
Natural Science Foundation of Beijing Municipality (No. 7182130)
National Natural Science Foundation of China (No. 81673184, No. 81370898)
National Key Program of Clinical Science (WBYZ2011-873)
Article History
Received: 26 May 2020
Accepted: 20 July 2020
First Online: 20 August 2020
Compliance with ethical standards
:
: All the authors declared no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Each subject gave written informed consent before participating.