Qin, Lu
Xu, Xiaowei
Ding, Lingling
Li, Zixiao
Li, Jiao
Article History
First Online: 9 July 2020
Ethics approval and consent to participate
: The Human Research Ethics Committees of Beijing Tiantan Hospital, Capital Medical University gave approval for this study, and all participants gave informed consent.
: Not applicable.
: The authors declare that they have no competing interests.