Funding for this research was provided by:
National Natural Science Foundation of China (81572260, 31430030, 81172232, 81502327, 81773299, 81701834, 81372501, 30900650)
Natural Science Foundation of Guangdong Province (2015ykzd07, 9451008901002146, 2013B021800259, S2013010015327, 2016A020215055, 2014J4100132, S2012010008378, 2015A020214010, 2013B021800126, 2017B070705002, 20090171120070, 2014A030313052, 2011B031800025, S2012010008270, 16ykjc08, 201704020094)
Text and Data Mining valid from 2019-11-29
Received: 15 July 2019
Accepted: 18 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: This study was approved by the institutional ethics committee of the First Affiliated Hospital of Sun Yat-sen University, and written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.