Underperforming doctors: a postal survey of the Northern Deanery

In this paper by George Taylor (6 June, pp 1705-8), the date in the first line of the methods section should have been 1998 [not 1988].

A social experiment that keeps adapting

The date that Australians elected a socialist labour government was 1972—not 1975, as stated in this article by Peter J McDonald (4 July, pp 55-6).