Brief Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Jun 14, 2009; 15(22): 2787-2793
Published online Jun 14, 2009. doi: 10.3748/wjg.15.2787
Figure 3
Figure 3 Cluster graph of monitoring sites in China from 2001 to 2005.