1. Which route should we select when performing double-balloon enteroscopy? 
Masanao Nakamura, MD, PhD, Yasumasa Niwa, MD, PhD, Naoki Ohmiya, MD, PhD, Hidemi Goto, MD, PhD 
Gastrointestinal Endoscopy 
Volume 67, Issue 3, Pages (March 2008)
DOI: /j.gie
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Figure 1
When the lesion is in the yellow dotted circle, the antegrade approach is considered and when in red, the opposite route is preferred.
Gastrointestinal Endoscopy  , DOI: ( /j.gie )
Copyright © 2008 American Society for Gastrointestinal Endoscopy Terms and Conditions