title: Unnecessary variation cloaked as discretion in medical decisions.
authors.forename: Niranjan
authors.initials: N
authors.lastname: Kissoon
mesh_terms: D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D008297:Male; D010351:Patient Discharge / Q000706:statistics & numerical data*; D013902:Radiography, Thoracic / Q000706:statistics & numerical data*; D012140:Respiratory Tract Diseases / Q000000981:diagnostic imaging* / Q000453:epidemiology*