Authors' Reply. 

<br/><br/>Available online from MWHC library: 1995 - present 
<br/><br/><br/>English 
<br/><br/><label>ISSN: </label>0894-7317 
<br/><br/><label>Subjects--Topical Terms: </label><br/>*Echocardiography/st [Standards]<br/>*Heart Ventricles/us [Ultrasonography]<br/>*Practice Guidelines as Topic<br/>*Stroke Volume<br/>*Ventricular Dysfunction/us [Ultrasonography]<br/>Female<br/>Humans<br/>Male
<br/><br/><label>Subjects--Geographic Terms: </label><br/>MedStar Heart & Vascular Institute