Funding for this research was provided by:
National Natural Science Foundation of China (31771330)
National Basic Research Program of China (973 Program) (2017YFC0110602)
Guangdong and Guangzhou provincial scientific and technique program (2014A020212200, 2015A040404022, 2015B010125006, 2015B010125005, 201704020129, and 201704020069)
Text and Data Mining valid from 2018-04-18
Received: 6 February 2018
Accepted: 5 April 2018
First Online: 18 April 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Southern Medical University, and the participants’ next of kin provided informed consent before commencing the present study.
: The authors declare that they have no competing interests.
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