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Authors
Liu, Qian
Zhao, Wenjuan
Xing, Yonghong
Hong, Yan
Zhou, Guanen
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Article History
First Online: 18 June 2020
Conflict of interest
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
: The study protocol was approved by the Ethics Committee for Medical Research at Tianjin Huanhu Hospital, and each participant recruited to the study provided informed consent.
