Levin, A B <br/><br/>
A simple test of cardiac function based upon the heart rate changes induced by the Valsalva maneuver.  [electronic resource] 

 -  The American journal of cardiology  Jul 1966 
 - 90-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9149 
<br/><br/><label>Standard No.: </label>10.1016/0002-9149(66)90200-1  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bradycardia<br/>Heart Function Tests<br/>Heart Rate<br/>Hemodynamics<br/>Humans<br/>Respiration<br/>Tachycardia