title: Two incorrect assertions about study of hospital standardised mortality ratios in the West Midlands.
authors: Mohammed A
authors: MA
authors: Mohammed
authors: Richard J
authors: RJ
authors: Lilford
mesh_terms: D003625:Data Collection / Q000379:methods*; D004812:Epidemiologic Methods; D017052:Hospital Mortality; D006801:Humans; D014798:Vital Statistics