WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 16,2005, Pages 2491-2496,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 16,2005, Pages 2502-2507,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 16,2005, Pages 2526-2529,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 16,2005, Pages 2426-2430,
WORLD JOURNAL OF GASTROENTEROLOGY, Volume 11, Issue 16,2005, Pages 2390-2397,