Luisada, A A <br/><br/>
Triplication and quadruplication of the second sound.  [electronic resource] 

 -  Chest  Mar 1971 
 - 316-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0012-3692 
<br/><br/><label>Standard No.: </label>10.1378/chest.59.3.316  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Aged<br/>Bundle-Branch Block--diagnosis<br/>Child<br/>Humans