Acute regional improvement of myocardial function after interventional transfemoral aortic valve replacement in aortic stenosis: A speckle tracking echocardiography study oleh Schattke Sebastian, Baldenhofer Gerd, Prauka Ines, Zhang Kun, Laule Michael, Stangl Verena, Sanad Wasiem, Spethmann Sebastian, Borges Adrian C, Baumann Gert, Stangl Karl, Knebel Fabian