Cost-effective modified endoscopic vacuum therapy for the treatment of gastrointestinal transmural defects: step-by-step process of manufacturing and its advantages - Diogo Turiani Hourneaux de Moura, MD, MSc, PhD; Bruno Salomão Hirsch, MD; Epifânio Silvino Do Monte Junior, MD; Thomas R. McCarty, MD; Flaubert Sena de Medeiros, MD; Christopher C. Thompson, MD; Eduardo Guimarães Hourneaux de Moura, MD, MSc, PhD (VideoGIE, 2021)