Funding for this research was provided by:
Natural Science Foundation of Tianjin City (16JCQNJC10900, 16JCZDJ36000)
National Natural Science Foundation of China (81401401)
Science Fund of Tianjin Medical University (2014KYQ11)
Article History
Received: 5 March 2018
Accepted: 13 June 2018
First Online: 22 June 2018
Ethics approval and consent to participate
: The Institutional Review Board is the Pingjin Hospital, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China. This institution approved the research protocol, and each participant provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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