Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastroenterol. Dec 7, 2012; 18(45): 6620-6627
Published online Dec 7, 2012. doi: 10.3748/wjg.v18.i45.6620
Figure 1
Figure 1 Selection of the studies for systematic review (PRISMA flowchart). Records identified through database search, n = 28.