Chen, Aiyun
Feng, Shanshan
Tang, Wenxi
Zhang, Liang
Funding for this research was provided by:
Department of Health of Guangdong Province (C2015033, B2014187)
Article History
Received: 2 November 2018
Accepted: 31 March 2019
First Online: 24 April 2019
Consent for publication
: Not applicable.
: The authors declare that they have no competing interests.
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