title: Appropriateness of care: why so much variation.
authors.affiliation: National Centre for Classification in Health, University of Sydney, Sydney, NSW richard.madden@sydney.edu.au.
authors.forename: Richard C
authors.initials: RC
authors.lastname: Madden
authors.affiliation: Menzies Centre for Health Policy, University of Sydney, Sydney, NSW.
authors.forename: Andrew
authors.initials: A
authors.lastname: Wilson
authors.affiliation: National Centre for Classification in Health, University of Sydney, Sydney, NSW.
authors.forename: Philip
authors.initials: P
authors.lastname: Hoyle
mesh_terms: D001315:Australia; D005843:Geography; D054625:Healthcare Disparities / Q000592:standards* / Q000706:statistics & numerical data*; D006801:Humans