Escota-Villanueva Javier, Lacambra-Blasco Isaac, Gonzalvo Carmen
Echocardiography Unit of Cardiology Medical Service, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain.
Circulation. 2008 Sep 23;118(13):e504. doi: 10.1161/CIRCULATIONAHA.107.736512.