Acknowledgments
We want to express our sincere appreciation to all the patients who
participated in the study. This study was supported by the Natural
Science Foundation of Guangdong Province (grant number 2017A030310286),
Scientific Research Project of Guangzhou (grant number 201707010282),
the Science and Technology Planning Project of Guangdong Province (grant
number 2014A020212627 and 2016A020215099), and the Chongqing Natural
Science Foundation (grant number cstc2018jcyjAX0245).