Funding for this research was provided by:
Beijing Municipal Science and Technology Project (Z161100000116096)
Received: 1 October 2019
Accepted: 3 February 2020
First Online: 7 February 2020
Ethics approval and consent to participate
: This research is approved by the Peking University Third Hospital Medical Science Research Ethics Committee (the approval number is 2019–064-02). Additionally, the research protocol has been registered in the ExternalRef removed (Identifier: ExternalRef removed). All participants will be informed and sign the written informed consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.