1. Volume 144, Issue 2, Pages 298-306 (February 2013)
Regional Variation in Anesthesia Assistance During Outpatient Colonoscopy Is Not Associated With Differences in Polyp Detection or Complication Rates 
Jason A. Dominitz, Laura–Mae Baldwin, Pamela Green, William I. Kreuter, Cynthia W. Ko 
Gastroenterology 
Volume 144, Issue 2, Pages (February 2013)
DOI: /j.gastro
Copyright © 2013 AGA Institute Terms and Conditions

2. Figure 1
Proportion of outpatient colonoscopies with anesthesia assistance among Medicare beneficiaries by state.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2013 AGA Institute Terms and Conditions