Review
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Oct 21, 2009; 15(39): 4886-4895
Published online Oct 21, 2009. doi: 10.3748/wjg.15.4886
Figure 2
Figure 2 Methodological quality graph: judgments about each methodological quality item presented as percentages across all included studies.