title: ARDS and the search for meaningful subgroups.
authors.forename: R G
authors.initials: RG
authors.lastname: Spragg
authors.forename: D
authors.initials: D
authors.lastname: Levin
mesh_terms: D006801:Humans; D018579:Patient Selection; D012128:Respiratory Distress Syndrome / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000628:therapy; D012720:Severity of Illness Index; D014057:Tomography, X-Ray Computed