title: Pneumonia Severity Index (PSI) lacking in breadth of applicability.
authors.forename: Robert E
authors.initials: RE
authors.lastname: Siegel
mesh_terms: D003661:Decision Support Techniques; D006760:Hospitalization; D006801:Humans; D010343:Patient Admission; D011014:Pneumonia / Q000175:diagnosis* / Q000473:pathology; D012720:Severity of Illness Index