Gonçalves, Guilherme <br/><br/>
[Portugal and Europe are poliomyelitis free].  [electronic resource] 

 -  Acta medica portuguesa   
 - 33-9 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article 
<br/><br/><label>ISSN: </label>0870-399X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acute Disease<br/>Europe--epidemiology<br/>Humans<br/>Poliomyelitis--epidemiology<br/>Poliovirus--isolation & purification<br/>Portugal--epidemiology<br/>Vaccination