Double balloon gastrointestinal endoscopy

Where are the most successful and most frequent double balloon gastrointestinal endoscopy performed in the south.  My mother, 87 years, is in need on one for undiagnosed bleeding in the small intestines.  She has already had a cam endoscopy but nothing was visible. Had 7 units of blood in March and 9 units in April.  Started in Aug. 2011.

[patient915]

Welcome to the gastroenterology community!  I would look into the large university hospitals in your area.  Has she had a capsule endoscopy (smart pill)?