Traction strategy with clips and rubber band allows complete en bloc endoscopic submucosal dissection of sessile serrated adenoma/polyp invading the site of previous appendectomy - Oung, Borathchakra; Chabrun, Edouard; Subtil, Clément; Cesbron-Metivier, Elodie; Dumora-Ezponda, Véronique; Jacques, Jérémie; Pioche, Mathieu (Endoscopy, 2019)