Meissner, M D <br/><br/>
Rapid method to determine the electrocardiographic frontal plane axis.  [electronic resource] 

 -  The American journal of cardiology  Apr 1990 
 - 949-50 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(90)91451-b  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography--methods<br/>Humans<br/>Mathematics