Kasprzak, S <br/><br/>
[Congenital persistent atrioventricular block in a 2-month-old infant].  [electronic resource] 

 -  Polski tygodnik lekarski (Warsaw, Poland : 1960)  Oct 1969 
 - 1655-7 p.  digital 
<br/><br/> Publication Type: Case Reports; Journal Article 
<br/><br/><label>ISSN: </label>0032-3756 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrocardiography<br/>Heart Block--congenital<br/>Humans<br/>Infant<br/>Male