Zhang, Peng
Lv, Hong
Qi, Xia
Xiao, Wenjing
Xue, Qinghua
Zhang, Lei
Li, Lihuan
Shi, Jia
Article History
Received: 20 February 2020
Accepted: 4 May 2020
First Online: 14 May 2020
Ethics approval and consent to participate
: The study was approved by the Ethical Review Board of Fuwai Hospital. (Ethical approval No. 2008–366). And written informed consent was provided by all participants.
: Not applicable.
: The authors declare that they have no competing interests.