Meta-Analysis
Copyright ©The Author(s) 2021.
World J Clin Cases. Jul 26, 2021; 9(21): 5932-5942
Published online Jul 26, 2021. doi: 10.12998/wjcc.v9.i21.5932
Figure 1
Figure 1 Study selection flow diagram (up to July 2020). CBM: Chinese Biological Medical database; CNKI: China National Knowledge Infrastructure; VIP: China Science and Technology Journal database; WF: WANFANG DATA database.