1. No Benefit of Covered vs Uncovered Self-Expandable Metal Stents in Patients With Malignant Distal Biliary Obstruction: A Meta-analysis 
Majid A. Almadi, Alan N. Barkun, Myriam Martel 
Clinical Gastroenterology and Hepatology 
Volume 11, Issue 1, Pages e1 (January 2013)
DOI: /j.cgh
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2. Figure 1
QUORUM diagram.
Clinical Gastroenterology and Hepatology  , e1DOI: ( /j.cgh )
Copyright © 2013 AGA Institute Terms and Conditions

3. Figure 2 Forest plot of stent patency proportion at 6 and 12 months.
Clinical Gastroenterology and Hepatology  , e1DOI: ( /j.cgh )
Copyright © 2013 AGA Institute Terms and Conditions

4. Figure 3
Forest plot of tumor ingrowth, tumor overgrowth, and stent migration.
Clinical Gastroenterology and Hepatology  , e1DOI: ( /j.cgh )
Copyright © 2013 AGA Institute Terms and Conditions