Funding for this research was provided by:
National Natural Science Foundation of China (81760112, 81402426, 81572726, 81402509)
Natural Science Foundation of Guangdong Province (2016A030313848, 2018A030313641)
Science and Technology Planning Project of Guangdong Province (2016A020212004)
Guangdong Medical Research Foundation (A2016312)
cience and Technology Planning Project of Guangdong Province (2017B020247057)
Text and Data Mining valid from 2019-07-26
Received: 24 April 2019
Accepted: 15 July 2019
First Online: 26 July 2019
Ethics approval and consent to participate
: This study has been approved by the Ethics Committee of the third affiliated hospital of Sun yat-sen university.
: Not applicable.
: The authors declare that they have no competing interests.