Funding for this research was provided by:
National Natural Science Foundation of China (71403092)
China Medical Board (11-069)
China Postdoctoral Science Foundation (2014 M562035)
Article History
Received: 3 May 2017
Accepted: 16 January 2018
First Online: 5 February 2018
Ethics approval and consent to participate
: All research methods and investigation tools in this study were approved by the Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology (IORG No: IORG0003571). All participants gave written informed consent for participation in this study, provided consent before filling out the questionnaire, and consented to the publication of the data.
: Not applicable
: The authors declare that they have no competing interests.
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