title: Epidemiology of otitis media in infants and preschool children.
authors: University of Pittsburgh School of Medicine, PA.
authors: M L
authors: ML
authors: Casselbrant
mesh_terms: D002675:Child, Preschool; D015331:Cohort Studies; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010034:Otitis Media with Effusion / Q000453:epidemiology* / Q000382:microbiology; D010414:Pennsylvania; D011446:Prospective Studies