The incidence of neonatal pneumonia in urban and rural areas of Beijing.
D001724:Birth Weight; D002681:China; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007233:Infant, Postmature; D007234:Infant, Premature; D007746:Labor Presentation; D008297:Male; D011014:Pneumonia / Q000453:epidemiology*; D011247:Pregnancy