WORLD JOURNAL OF GASTROENTEROLOGY, Volume 9, Issue 10,2003, Pages 2362-2365,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 9, Issue 10,2003, Pages 2211-2215,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 9, Issue 10,2003, Pages 2135-2136,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 9, Issue 10,2003, Pages 2236-2239,