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Authors
Sun, Chao
Qi, Xuan
Tian, Yu
Gao, Lixia
Jin, Hongtao
Guo, Huifang
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Funding
Funding for this research was provided by:
Scientific Research Fund of Hebei Province Health Department (ZL20140070)
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Article History
Received: 14 April 2019
Accepted: 15 July 2019
First Online: 29 July 2019
Ethics approval and consent to participate
: The ethical approval for the present study was obtained from the Second Hospital of Hebei Medical University Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.
