Stent-over-sponge (SOS): a rescue option in patients with complex postoperative anastomotic leaks after esophagectomy - Bartella, Isabel; Mallmann, Christoph; Bürger, Martin; Toex, Ulrich; Goeser, Tobias; Bruns, Christiane; Chon, Seung-Hun (Endoscopy, 2019)