Corrections

Cumulative risk adjusted mortality chart for detecting changes in death rate: observational study of heart surgery

BMJ 1998; 316 doi: https://doi.org/10.1136/bmj.316.7149.1947p (Published 27 June 1998) Cite this as: BMJ 1998;316:1947

An editorial error occurred in this paper by J Poloniecki et al (6 June, pp 1697-700). The authors and contributors were Jan Poloniecki, Oswaldo Valencia, and Peter Littlejohns. Tom Treasure chose not to be an author and was not a contributor.

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