Hufnagel, C A <br/><br/>
In the beginning. Surgical correction of aortic insufficiency. 1954.  [electronic resource] 

 -  The Annals of thoracic surgery  Mar 1989 
 - 475-6 p.  digital 
<br/><br/> Publication Type: Biography; Classical Article; Historical Article; Journal Article 
<br/><br/><label>ISSN: </label>0003-4975 
<br/><br/><label>Standard No.: </label>10.1016/0003-4975(89)90403-7  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aortic Valve<br/>Aortic Valve Insufficiency--history<br/>Heart Valve Prosthesis--history<br/>History, 20th Century<br/>Humans