Updates are available Correction dated 2020-03-19
Click to view Correction: https://doi.org/10.1186/s12889-020-08502-1
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Authors
Chen, Shao-wei
Ji, Gui-yuan
Jiang, Qi
Wang, Ping
Huang, Rui
Ma, Wen-jun
Chen, Zi-hui
Peng, Jie-wen
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Funding
Funding for this research was provided by:
Guangdong key research and development program (2019B020230001)
Guangdong key research and development program (2019B020210001)
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More Information
Article History
Received: 30 August 2019
Accepted: 21 November 2019
First Online: 29 November 2019
Change Date: 19 March 2020
Change Type: Correction
Change Details: It was highlighted that in the original article [1] the data on categorical variables was wrongly arranged in Table��1 and there was an incorrect statement in the fourth paragraph of the Discussion section.
Ethics approval and consent to participate
: This study was performed in accordance with the Declaration of Helsinki. Protocol of this study was approved by the Ethical Committee of Guangdong Provincial Center for Disease Control and Prevention. Eligible participants attended this study with signed informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
