Bronchopulmonary dysplasia: the need for epidemiologic studies.
D004374:Ductus Arteriosus, Patent / Q000453:epidemiology; D006801:Humans; D006819:Hyaline Membrane Disease / Q000453:epidemiology; D007223:Infant; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007385:Intermittent Positive-Pressure Ventilation / Q000009:adverse effects; D008171:Lung Diseases / Q000453:epidemiology*; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects; D014861:Washington