Funding for this research was provided by:
Six Talent Peaks Project in Jiangsu Province (WSW 048)
Article History
Received: 26 September 2018
Accepted: 25 April 2019
First Online: 10 May 2019
Ethics approval and consent to participate
: This study followed the tenets of the Declaration of Helsinki and was approved by the ethics committee of the Affiliated Hospital, Nanjing University of Chinese Medicine. Informed written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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