title: [Whether more is better].
authors.affiliation: Pracownia Echokardiografii Klinicznej, Klinika Wad Wrodzonych Serca, Instytut Kardiologii, Warszawa.
authors.forename: Anna
authors.initials: A
authors.lastname: Klisiewicz
mesh_terms: D025401:Echocardiography, Stress; D005260:Female; D006333:Heart Failure / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D006801:Humans; D008297:Male; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging* / Q000503:physiopathology*