Luisada, A A <br/><br/>
Sound of the heart. Patent ductus in an elderly man.  [electronic resource] 

 -  Chest  Jul 1974 
 - 69-70 p.  digital 
<br/><br/> Publication Type: Case Reports; Journal Article 
<br/><br/><label>ISSN: </label>0012-3692 
<br/><br/><label>Standard No.: </label>10.1378/chest.66.1.69  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ductus Arteriosus, Patent--diagnosis<br/>Heart Auscultation<br/>Humans<br/>Male<br/>Middle Aged<br/>Phonocardiography