González, MarÃa Mercedes; Sarmiento, Luis; Rey-Benito, Gloria Janneth; Padilla, Leonardo; Giraldo, Alejandra MarÃa; Castaño, Jhon Carlos Absence of poliovirus circulation in Colombian departments with vaccination coverage below 80%. Revista Panamericana de Salud Pública, 2012, vol.32, n. 2, ISSN 1020-4989.
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