,
Shen, Zewei
Yu, Canqing
Guo, Yu
Bian, Zheng
Wei, Yuxia
Du, Huaidong
Yang, Ling
Chen, Yiping
Gao, Yulian
Zhang, Xukui
Chen, Junshi
Chen, Zhengming
Lv, Jun
Li, Liming
Article History
Received: 2 October 2019
Accepted: 6 April 2020
First Online: 19 April 2020
Compliance with ethical standards
: All participants signed informed consent forms before joining the study. Both the Ethics Review Committee of the Chinese Center for Disease Control and Prevention (Beijing, China) and the Oxford Tropical Research Ethics Committee, University of Oxford (UK) have approved the CKB study.
: None. The funders had no role in the study design, data collection, data analysis and interpretation, writing of the report, or the decision to submit the article for publication.