1. Was That Last Colonoscopy Really Negative
Was That Last Colonoscopy Really Negative? A Surprising Cause of Rectal Bleeding in a 75-Year-Old Man 
R. Brooks Vance, Daniel Duncan, Evan S. Dellon 
Gastroenterology 
Volume 142, Issue 5, Pages e3-e4 (May 2012)
DOI: /j.gastro
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2. Gastroenterology 2012 142, e3-e4DOI: (10.1053/j.gastro.2011.11.044)
Copyright © 2012 AGA Institute Terms and Conditions

3. Gastroenterology 2012 142, e3-e4DOI: (10.1053/j.gastro.2011.11.044)
Copyright © 2012 AGA Institute Terms and Conditions