Meta-Analysis
Copyright ©2013 Baishideng Publishing Group Co.
World J Gastroenterol. Dec 14, 2013; 19(46): 8770-8779
Published online Dec 14, 2013. doi: 10.3748/wjg.v19.i46.8770
Figure 1
Figure 1 Flow diagram for the literature search. CNKI: China National Knowledge Infrastructure.