Systematic Reviews
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Oct 14, 2014; 20(38): 14018-14032
Published online Oct 14, 2014. doi: 10.3748/wjg.v20.i38.14018
Figure 1
Figure 1 Modified preferred reporting items for systematic reviews and meta-analyses flow diagram outlining study selection strategy.