Brief Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Aug 7, 2009; 15(29): 3653-3659
Published online Aug 7, 2009. doi: 10.3748/wjg.15.3653
Figure 2
Figure 2 The study population framework. 12005 Korean National Health and Nutrition Examination Survey.