Hogan H, Healey F, Neale G, Thomson R, Vincent C, Black N. Preventable deaths due to problems in care in English acute hospitals: a retrospective case record review study. This paper was published in print with an incorrect doi. The print citation is BMJ Qual Saf 2012;21:737–745 and the correct doi is 10.1136/bmjqs-2012-001159.