Source:
American Journal of Gastroenterology (Springer Nature); Sep2008 Supplement, Vol. 103, pS1-S38, 37p, 10 Black and White Photographs, 1 Diagram, 21 Charts, 11 Graphs
Source:
American Journal of Gastroenterology (Springer Nature); Sep2008 Supplement, Vol. 103, pS206-S372, 166p, 172 Black and White Photographs, 8 Charts, 2 Graphs