title: The clinical and roentgenographic manifestations of primary atypical pneumonia, etiology unknown.
authors.forename: J B
authors.initials: JB
authors.lastname: McDONALD
authors.forename: B
authors.initials: B
authors.lastname: EHRENPREIS
mesh_terms: D006801:Humans; D007251:Influenza, Human; D009181:Mycoses; D011014:Pneumonia; D018410:Pneumonia, Bacterial; D011019:Pneumonia, Mycoplasma
keywords: PNEUMONIA/atypical