[The role of viruses in infections of the lower respiratory tract in children of Mexico City].
D000367:Age Factors; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008800:Mexico; D012141:Respiratory Tract Infections / Q000209:etiology*; D014505:Urban Population; D014777:Virus Diseases / Q000453:epidemiology*
El papel de los virus en las infecciones del tracto respiratorio inferior en niños de la ciudad de México.