Funding for this research was provided by:
National Natural Science Foundation of China (81971224, 31771016)
Guangdong Province Medical Science Technology Research Grant (A2019452)
Text and Data Mining valid from 2019-11-23
Received: 8 July 2019
Accepted: 7 November 2019
First Online: 23 November 2019
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the ethical committee of The First Affiliated Hospital, Sun Yat-sen University, China [approval no.: 2016(85)]. Written informed consent was obtained from all participants.
: Written informed consent was obtained from all participants for the publication of the data present in the manuscript.
: The authors declare that they have no competing interests.