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Mit diesem Beitrag und einem begleitendem Festsymposium im Rahmen der Düsseldorfer Herztagung 2015 soll an einen der Meilensteine auf den Weg hierhin erinnert werden. Am 9. Februar 1955 verschloss Ernst Derra, zu dem Zeitpunkt Leiter der Chirurgischen Klinik der damaligen Medizinischen Akademie in Düsseldorf, erstmals in Deutschland einen Vorhofseptumdefekt des Herzens unter Sicht, im Kreislaufstillstand...
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