title: Lead time bias and standardised mortality ratios in intensive care patients.
authors.forename: M S
authors.initials: MS
authors.lastname: Nielsen
authors.forename: T E
authors.initials: TE
authors.lastname: Woodcock
authors.forename: K M
authors.initials: KM
authors.lastname: Nolan
authors.forename: M M
authors.initials: MM
authors.lastname: Jonas
mesh_terms: D015982:Bias; D003422:Critical Care; D004739:England; D017052:Hospital Mortality; D006801:Humans