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Authors
Gao, Nan
Qi, Xiaoyong http://orcid.org/0000-0002-6240-8947
Dang, Yi
Li, Yingxiao
Wang, Gang
Liu, Xiao
Zhu, Ning
Fu, Jinguo
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Article History
Received: 7 June 2020
Accepted: 30 November 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: The study was approved by the ethics committees of Hebei General Hospital, Baoding First Central Hospital, and Cangzhou Central Hospital. The patients and their immediate family members consented to receive a primary intervention. The written consent was obtained from study participants and their immediate family.
: Not applicable.
: The authors declare that they have no competing interests.
