Covid-19 in Endoscopy: How Likely is Trasnmission of Infection? Results from an International, Multicenter Study - Papanikolaou, I; Chatzidakis, A; Miltiadou, K; Facciorusso, A; Crinò, SF; Gkolfakis, P; Deriban, G; Tadic, M; Hauser, G; Vezakis, A; Jovanovic, I; Muscatiello, N; Meneghetti, A; Tziatzios, G; Stardelova, K; Lacković, A; Bourou, MZ; Djuranovic, S; Triantafyllou, K (Endoscopy, 2021)