Funding for this research was provided by:
National Natural Science Foundation of China (81473562)
Received: 17 February 2019
Accepted: 1 July 2019
First Online: 5 July 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Shanghai University of Traditional Chinese Medicine, and the written informed consent was also obtained from each participant in advance.
: Not applicable.
: The authors declare that they have no competing interests.