Single-Use versus Reusable Gastroscopes for the initial Assessment of patients with Upper Gastrointestinal Bleeding: A Prospective Randomised Non-Inferiority Trial - Römmele, C; Ayoub, M; Scheppach, M W; Wanzl, J; Tadic, V; Braun, G; Weber, T; Roser, D A; Nagl, S; Messmann, H; Alanna, E (Endoscopy, 2025)