See also: Tube-in-tube endoscopic vacuum therapy for the closure of upper gastrointestinal fistulas, leaks, and perforations Endoscopy 2022; 54(10): 980-986DOI: 10.1055/a-1774-4630 See also: Reply to Dioscoridi et al.Endoscopy 2023; 55(06): 587-587DOI: 10.1055/a-2021-0117