WORLD JOURNAL OF GASTROENTEROLOGY, Volume 16, Issue 5,2010, Pages 583-587, doi:10.3748/wjg.v16.i5.583
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 16, Issue 5,2010, Pages 657-658, doi:10.3748/wjg.v16.i5.657
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WORLD JOURNAL OF GASTROENTEROLOGY, Volume 16, Issue 5,2010, Pages 603-607, doi:10.3748/wjg.v16.i5.603
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 16, Issue 5,2010, Pages 588-595, doi:10.3748/wjg.v16.i5.588