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Rosenhek, Raphael; Zilberszac, Robert; Schemper, Michael; Czerny, Martin; Mundigler, Gerald; Graf, Senta; Bergler-Klein, Jutta; Grimm, Michael; Gabriel, Harald; Maurer, Gerald (2010). Natural history of very severe aortic stenosis. Circulation, 121(1), pp. 151-6. Baltimore, Md.: Lippincott Williams & Wilkins 10.1161/CIRCULATIONAHA.109.894170
