Wang, Xiaoqin
Zhou, Qi
Chen, Yaolong
Yang, Nan
Pottie, Kevin
Xiao, Yujie
Tong, Yajing
Yao, Liang
Wang, Qi
Yang, Kehu
Norris, Susan L.
Funding for this research was provided by:
National Social Science Foundation of China (19ZDA142)
Article History
Received: 5 March 2020
Accepted: 20 May 2020
First Online: 8 July 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: Susan L. Norris is an employee of WHO, where one of her responsibilities is to help oversee the quality of WHO guidelines. Yaolong Chen, Kevin Pottie and Susan L. Norris are members of the GRADE Working Group. No other competing interests were disclosed.