Hybrid NOTES: Complete Endoscopic Resection of the Gastric Wall Assisted by Laparoscopy in a Gastric Fundus Gastrointestinal Stromal Tumor - João Fernandes; Diogo Libânio; Sílvia Giestas; Tarcísio Araújo; José Ramada; Jorge Canena; Luís Lopes (GE: Portuguese Journal of Gastroenterology, 2018)