ESGE and ESGENA Position Statement on gastrointestinal endoscopy and COVID-19: Updated guidance for the era of vaccines and viral variants - Gralnek, Ian M.; Hassan, Cesare; Ebigbo, Alanna; Fuchs, Andre; Beilenhoff, Ulrike; Antonelli, Giulio; Bisschops, Raf; Arvanitakis, Marianna; Bhandari, Pradeep; Bretthauer, Michael; Kaminski, Michal F.; Lorenzo-Zuniga, Vicente; Rodriguez de Santiago, Enrique; Siersema, Peter D.; Tham, Tony C.; Triantafyllou, Konstantinos; Tringali, Alberto; Voiosu, Andrei; Webster, George; de Pater, Marjon; Fehrke, Björn; Gazic, Mario; Gjergek, Tatjana; Maasen, Siiri; Waagenes, Wendy; Dinis-Ribeiro, Mario; Messmann, Helmut (Endoscopy, 2021)