Mu, Yi
Wang, Xiaodong
Wang, Yanping
Liu, Zheng
Li, Mingrong
Li, Xiaohong
Li, Qi
Zhu, Jun
Liang, Juan
Wang, Haidong
Funding for this research was provided by:
The National Key R&D Program of China (2019YFC1005100)
The National Health Commission of the People’s Republic of China
China Medical Board (11-065)
World Health Organization (CHN-12-MCN-004888)
UNICEF
Article History
Received: 16 August 2020
Accepted: 15 February 2021
First Online: 19 March 2021
Ethics approval and consent to participate
: Ethical approval for the NMMSS is provided by the Ethics Committee of West China Second University Hospital, Sichuan University, China. Informed consent from the patient was waived from the Ethics Committee, as the data used in this study were obtained from a national routine surveillance system established by the government. Data use was authorized by the National Health Commission, and data provided to us were de-identified.
: Not applicable.
: The authors have declared that no competing interests exist.