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Authors
Chen, Kai
Yang, Yan-Lin
Li, Hong-Liang
Xiao, Dan
Wang, Yang
Zhang, Linlin
Zhou, Jian-Xin
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Article History
Received: 12 November 2020
Accepted: 15 February 2021
First Online: 25 February 2021
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of Beijing Tiantan Hospital (KY2017–062-02). Informed consent was obtained from each patient or their next of kin. All methods in the study were carried out in accordance with the declaration of Helsinki (1964).
: Not applicable.
: The authors declare that they have no competing interests.
