Rissanen, V <br/><br/>
Mena electrical QRS axis in the frontal plane in the electrocardiograms of middle-aged and elderly hospital patients.  [electronic resource] 

 -  Advances in cardiology  1978 
 - 300-2 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0065-2326 
<br/><br/><label>Standard No.: </label>10.1159/000400468  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Age Factors<br/>Aged<br/>Electrocardiography<br/>Female<br/>Heart Conduction System--physiopathology<br/>Heart Diseases--physiopathology<br/>Humans<br/>Lung Diseases--physiopathology<br/>Male<br/>Middle Aged