Brief Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Jun 21, 2009; 15(23): 2908-2912
Published online Jun 21, 2009. doi: 10.3748/wjg.15.2908
Figure 1
Figure 1 Survival functions for PBD and non-PBD groups.