[1]
Rojas, J.H., Zapata, H., Alzate, A. and Rodríguez, Álvaro 2008. Vacunal cover in children 12 to 47 months old of social and economic 1 and 2 layers in the urban zone of Cali, year 2002. Colombia Medica. 39, 1 (Mar. 2008), 66–73. DOI:https://doi.org/10.25100/cm.v39i1.551.