Low-Flow/Low-Gradient Severe Aortic Valve Stenosis Shows Insignificant Ejection Fraction Improvement after Aortic Valve Replacement - Ntinopoulos, V.; Löblein, H.; Dzemali, O.; Odavic, D.; Häussler, A.; Gruszczynski, M.; Zientara, A.; Genoni, M. (The Thoracic and Cardiovascular Surgeon, 2018)