How to Critically Read the GI Epidemiology Literature Joe West, Timothy R. Card, Kate M. Fleming Gastroenterology Volume 145, Issue 3, Pages 496-499 (September 2013) DOI: 10.1053/j.gastro.2013.06.050 Copyright © 2013 AGA Institute Terms and Conditions
Figure 1 Oxford Centre for Evidence-Based Medicine Levels of Evidence Table. Gastroenterology 2013 145, 496-499DOI: (10.1053/j.gastro.2013.06.050) Copyright © 2013 AGA Institute Terms and Conditions
Gastroenterology 2013 145, 496-499DOI: (10.1053/j.gastro.2013.06.050) Copyright © 2013 AGA Institute Terms and Conditions