Multipolar traction with adjustable force increases procedure speed during endoscopic submucosal dissection: the A-TRACT-4 traction device - Grimaldi, Jean; Masgnaux, Louis-Jean; Rivory, Jérôme; Legros, Romain; Wallenhorst, Timothée; Jacques, Jérémie; Pioche, Mathieu (Endoscopy, 2022)