1. Preface Gastrointestinal Endoscopy Clinics
Grace H. Elta, MD 
Gastrointestinal Endoscopy Clinics 
Volume 19, Issue 2, Pages xiii-xiv (April 2009)
DOI: /j.giec
Copyright © 2009 Elsevier Inc. Terms and Conditions

2. Grace H. Elta, MD
Gastrointestinal Endoscopy Clinics  , xiii-xivDOI: ( /j.giec )
Copyright © 2009 Elsevier Inc. Terms and Conditions

3. Kenneth K. Wang, MD Guest Editors
Gastrointestinal Endoscopy Clinics  , xiii-xivDOI: ( /j.giec )
Copyright © 2009 Elsevier Inc. Terms and Conditions