Progress Toward Poliomyelitis Eradication — Afghanistan and Pakistan, January 2013–August 2014

por Farag, Noha H., Alexander, James, Hadler, Stephen, Quddus, Arshad, Durry, Elias, Wadood, Mufty Zubair, Tangermann, Rudolph H., Ehrhardt, Derek
Publicado 2014