1. Esophageal adenocarcinoma arising from Barrett's metaplasia has regional variations in the west 
Janusz A. Jankowski, Dawn Provenzale, Paul Moayyedi 
Gastroenterology 
Volume 122, Issue 2, Pages (February 2002)
DOI: /gast
Copyright © 2002 American Gastroenterological Association Terms and Conditions

2. Fig. 1
Funnel plot of data in the United Kingdom. Reported cancer risk versus size of study. The data by Shaheen et al.,2 is shown and indicates a bias, whereas the data from the United Kingdom does not.
Gastroenterology  , DOI: ( /gast )
Copyright © 2002 American Gastroenterological Association Terms and Conditions