Meta-Analysis
Copyright ©The Author(s) 2015.
World J Gastroenterol. May 28, 2015; 21(20): 6341-6351
Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6341
Figure 1
Figure 1 Flow chart of study selection. RCTs: Randomized controlled trials.