Hanna, J <br/><br/>
Oral poliomyelitis vaccines.  [electronic resource] 

 -  Lancet (London, England)  May 1996 
 - 1495 p.  digital 
<br/><br/> Publication Type: Comment; Letter 
<br/><br/><label>ISSN: </label>0140-6736 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Immunization Programs<br/>Poliomyelitis--prevention & control<br/>Poliovirus Vaccine, Inactivated<br/>Poliovirus Vaccine, Oral