Evidence-Based Medicine
Copyright ©2014 Baishideng Publishing Group Co.
World J Gastroenterol. Apr 7, 2014; 20(13): 3663-3671
Published online Apr 7, 2014. doi: 10.3748/wjg.v20.i13.3663
Figure 1
Figure 1 Preferred reporting items for systematic reviews and meta-analyses flow diagram. G-I-N: Guidelines International Network; NGC: National Guideline Clearing House; NICE: National Institute for Health and Care Excellence.