Innovative gastric endoscopic muscle biopsy to identify all cell types, including myenteric neurons and interstitial cells of Cajal in patients with idiopathic gastroparesis: a feasibility study (with video). - Rajan E; Gostout CJ; Wong Kee Song LM; Szarka LA; Kashyap PC; Smyrk TC; Bingener J; Deters JL; Knipschield MA; Bernard CE; Farrugia G (Gastrointestinal endoscopy, 2016)