Gralnek I, Rabinovitz R, Afik D et al: A simplified ingestion procedure for esophageal capsule endoscopy: initial evaluation in healthy volunteers. Endoscopy 38: 913-918, 2006
Matti W, Gralnek IM: Capsule Endoscopy of the Esophagus. J Clin Gastroenterol 43: 605-611, 2009