title: Predicting the unpredictable: is it possible clinically to separate H1N1 from non-H1N1 community-acquired pneumonia?
authors.forename: Nita
authors.initials: N
authors.lastname: Sehgal
authors.forename: Mark
authors.initials: M
authors.lastname: Woodhead
mesh_terms: D000328:Adult; D000368:Aged; D017714:Community-Acquired Infections / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification*; D007251:Influenza, Human / Q000175:diagnosis*; D008875:Middle Aged; D011024:Pneumonia, Viral / Q000175:diagnosis*