Pedreira, Cristina <br/><br/>
The path towards polio eradication over 40 years of the Expanded Program on Immunization in the Americas.  [electronic resource] 

 -  Revista panamericana de salud publica = Pan American journal of public health  2017 
 - e154 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1680-5348 
<br/><br/><label>Standard No.: </label>10.26633/RPSP.2017.154  doi