Zhang, Yan
Jin, Jing-Lu
Cao, Ye-Xuan
Zhang, Hui-Wen
Guo, Yuan-Lin
Wu, Na-Qiong
Zhu, Cheng-Gang
Gao, Ying
Hua, Qi
Li, Yan-Fang
Xu, Rui-Xia
Li, Jian-Jun http://orcid.org/0000-0003-2536-4364
Article History
Received: 23 April 2020
Accepted: 2 July 2020
First Online: 9 July 2020
Ethics approval and consent to participate
: The study complied with the principles of the Declaration of Helsinki and was approved by the ethical review board of Fuwai Hospital (Beijing, China). Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.