WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 10,2009, Pages 1259-1263, doi:10.3748/wjg.15.1259
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 10,2009, Pages 1273-1275, doi:10.3748/wjg.15.1273
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 10,2009, Pages 1168-1177, doi:10.3748/wjg.15.1168
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 10,2009, Pages 1231-1236, doi:10.3748/wjg.15.1231
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 15, Issue 10,2009, Pages 1186-1193, doi:10.3748/wjg.15.1186