Funding for this research was provided by:
National Natural Science Foundation of China (81272897)
Science and Technology Foundation of the Guangdong Province (2014A050503029)
Sun Yat-sen Initiative Program for Scientific Research (YXQH201701)
Foundation of Guangzhou Science and Technology Bureau (201400000004-1)
Text and Data Mining valid from 2018-03-12
Received: 1 May 2017
Accepted: 28 February 2018
First Online: 12 March 2018
Ethics approval and consent to participate
: The Ethics Committee of Sun Yat-Sen Memorial Hospital approved the study. Ethics approval number: 伦备第(08)号. All volunteers signed informed consent documents approving the use of their samples for research purposes.
: Not applicable.
: The authors declare that they have no competing interests.
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