1. Volume 142, Issue 2, Pages 233-240 (February 2012)
Tobacco Smoking Increases the Risk of High-Grade Dysplasia and Cancer Among Patients With Barrett's Esophagus 
Helen G. Coleman, Shivaram Bhat, Brian T. Johnston, Damian McManus, Anna T. Gavin, Liam J. Murray 
Gastroenterology 
Volume 142, Issue 2, Pages (February 2012)
DOI: /j.gastro
Copyright © 2012 AGA Institute Terms and Conditions

2. Figure 1
Kaplan–Meier plot showing the proportion of BE patients who progressed to HGD or EAC by smoking status.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2012 AGA Institute Terms and Conditions