Document is current
Any future updates will be listed below
-
Authors
Cheng, Weibin https://orcid.org/0000-0002-9845-6676
Xu, Huifang
Tang, Weiming
Zhong, Fei
Meng, Gang
Han, Zhigang
Zhao, Jinkou
-
Funding
Funding for this research was provided by:
Guangzhou Medical Scientific Research Foundation (201102A211001, 20121A011123)
the National Science and Technology Major Project (2018ZX10715004)
Guangzhou Municipal Science and Technology Project (201607010332, 201707010184)
- License Information
-
More Information
Article History
Received: 1 September 2018
Accepted: 3 July 2019
First Online: 19 July 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Guangzhou Center for Disease Control and Prevention in January 15, 2009 (Approved No. of ethic committee: GZCDC2009003). Consents were obtained from all participants by using an online ‘click to consent’ procedure.
: Not applicable.
: The authors declare that they have no competing interests.
