Funding for this research was provided by:
National Natural Science Foundation of China (81771766, 81771765, 81373206, 81401357, 81671622, 81701621, 81671621)
The National Key Research and Development Program of China (2016YFC0903900)
Independent Innovation Projects of Central South University (2016zzts131)
Text and Data Mining valid from 2018-07-05
Received: 23 December 2017
Accepted: 24 May 2018
First Online: 5 July 2018
Ethics approval and consent to participate
: This study was approved by the institutional review board at Xiangya Hospital, Central South University of Changsha (Changsha, Hunan, China). All of the participants in the study signed a written informed consent form prior to participation.
: The authors declare that they have no competing interests.
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