Funding for this research was provided by:
National Natural Science Foundation of China (8167151006, 8167141095)
Received: 31 January 2019
Accepted: 15 May 2019
First Online: 31 May 2019
Ethics approval and consent to participate
: This study was approved by the Internal Review and the Ethics Boards of Guangzhou University of Chinese Medicine and The Third Affiliated Hospital, Guangzhou University of Chinese Medicine. Informed written consent was obtained from all study subjects.
: Not applicable.
: The authors declare that they have no competing interests.
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