SCHERF, D <br/><br/>
Prolonged P-R interval and interpolated ventricular extrasystoles.  [electronic resource] 

 -  Diseases of the chest  Oct 1962 
 - 425-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0096-0217 
<br/><br/><label>Standard No.: </label>10.1378/chest.42.4.425  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography<br/>Heart Block<br/>Humans<br/>Ventricular Premature Complexes