Otitis media in low-birth-weight infants.
D001724:Birth Weight; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000150:complications / Q000453:epidemiology*; D008297:Male; D010033:Otitis Media / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology; D010414:Pennsylvania; D011446:Prospective Studies