WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 23,2009, Pages 2923-2926, doi:10.3748/wjg.15.2923
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 23,2009, Pages 2817-2833, doi:10.3748/wjg.15.2817
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 23,2009, Pages 2927-2929, doi:10.3748/wjg.15.2927
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 23,2009, Pages 2908-2912, doi:10.3748/wjg.15.2908
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 23,2009, Pages 2878-2881, doi:10.3748/wjg.15.2878