Funding for this research was provided by:
National Natural Science Foundation of China (81377249)
Guangdong Science and Technology Department (2016A020213005, 2017A020215043)
Guangzhou Science, Technology and Innovation Commission (201704020216)
Clinical Research Project of Southern Medical University (LC2016ZD027)
Received: 2 December 2018
Accepted: 2 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: The study was approved by the ethical review board of Zhujiang Hospital (Guangzhou, China).
: Not applicable.
: The authors declare that they have no competing interests.
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