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Authors
Zhang, Yue
Chen, Jian
Hou, Xunyao
Guo, Yunliang
Lv, Renjun
Xu, Song
Nie, Shanjing
Liu, Xueping
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Article History
Received: 9 December 2019
Revised: 3 February 2020
Accepted: 10 March 2020
First Online: 17 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in the study were in accordance with the ethical standards by the ethical committee of the Shandong Provincial Hospital and were conducted in accordance with the principles and guidelines laid down in the 1964 Declaration of Helsinki.
: Informed consent was obtained from all individual participants included in the study.
