[Epidemiology and control of poliomyelitis. I. Progress and perspectives].
D006801:Humans; D008800:Mexico; D011051:Poliomyelitis / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control; D017955:Poliovirus / Q000145:classification
Epidemiología y control de la poliomielitis. I. Avances y perspectivas.