The American Journal of Gastroenterology
The American Journal of Gastroenterology > 2003 > 98 > 9 > 2098-2099
The American Journal of Gastroenterology > 2003 > 98 > 9 > 2097-2098
The American Journal of Gastroenterology > 2003 > 98 > 9 > 2098-2099
The American Journal of Gastroenterology > 2003 > 98 > 9 > 2097-2098