Endoscopic submucosal dissection using countertraction with clips and rubber band allows safe en bloc resection of recurrent duodenal superficial lesions with intense fibrosis - Lupu, Alexandru; Faller, Julien; Oung, Borathchakra; Wallenhorst, Timothée; Jacques, Jérémie; Pioche, Mathieu (Endoscopy, 2020)