Liu, Zhao-Yan
Yishake, Dinuerguli
Fang, Ai-Ping
Zhang, Dao-Ming
Liao, Gong-Cheng
Tan, Xu-Ying
Zhang, Yao-Jun
Zhu, Hui-Lian
Funding for this research was provided by:
National Natural Science Foundation of China (81973016, 81803219)
Natural Science Foundation of Guangdong Province (2018A030310335)
Article History
Received: 26 December 2019
Accepted: 21 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: The Ethics Committee of the School of Public Health at Sun Yat-sen University approved the protocol of this study. Written informed consent was obtained from all participants. The study was performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.