Characteristics of the sources, evaluation, and grading of the certainty of evidence in systematic reviews in public health: A methodological study
Yangqin Xun, Q. Guo, M. Ren, Yunlan Liu, Yajia Sun, Shouyuan Wu, H. Lan, Juanjuan Zhang, Hui Liu, Jianjian Wang, Q. Shi, Qi Wang, Ping Wang, Yaolong Chen, R. Shao, D. Xu
Frontiers in Public Health