Meta-Analysis
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Oct 28, 2014; 20(40): 14973-14985
Published online Oct 28, 2014. doi: 10.3748/wjg.v20.i40.14973
Figure 1
Figure 1 Flow diagram of studies identified and selected. RCT: Randomized controlled trials; CNKI: China National Knowledge Infrastructure database; CBM: Chinese Biomedical Database.