Funding for this research was provided by:
China Medical Board (16-253)
Text and Data Mining valid from 2018-09-17
Received: 19 July 2018
Accepted: 4 September 2018
First Online: 17 September 2018
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Institutional Review Board of Sun Yat-sen University. Written informed consent has been obtained from all respondents.
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