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Wenn m\u00f6glich folgen sie vorliegender Evidenz, ansonsten der Erfahrung der Autorinnen und Autoren. Vorausgesetzt werden Kompetenzen in der diagnostischen Gastroskopie und Koloskopie inklusive einfacher Prozeduren sowie eine strukturierte Weiterbildung durch erfahrene Trainer. Auch ex-vivo Modelle k\u00f6nnen eingerechnet werden. Wir schlagen zum Kompetenzerwerb 70 Endoskopische Mukosaresektionen von Polypen &gt;2cm (schwache Evidenz), 60 Endoskopische Submukosadissektionen (moderate Evidenz), 15 Vollwandresektionen (keine Evidenz), 200 ERCPs (gute Evidenz), 225 Endosonographien (schwache Evidenz), 50 endoskopische Blutstillungen (schwache Evidenz) und 25 POEM (f\u00fcr ESD erfahrene Endoskopiker) vor. F\u00fcr TIPS-Anlagen schlagen wir 20 pro Jahr pro Zentrum vor (gute Evidenz). Keine Basis f\u00fcr eine gesonderte Empfehlung sehen wir beim Stenting und bei Verschlusstechniken. 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