Block, F E <br/><br/>
What is heart rate, anyway?  [electronic resource] 

 -  Journal of clinical monitoring  Nov 1994 
 - 366-70 p.  digital 
<br/><br/> Publication Type: Comment; Editorial 
<br/><br/><label>ISSN: </label>0748-1977 
<br/><br/><label>Standard No.: </label>10.1007/BF01618415  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography<br/>Heart Rate<br/>Humans<br/>Monitoring, Physiologic--instrumentation