Effect of combinations of drugs on all cause mortality in patients with ischaemic heart disease: nested case-control analysis

The authors of this article by Julia Hippisley-Cox and Carol Coupland, published last year, have advised us that a reference was wrong (BMJ 2005;330:1059-63, 7 May). Reference 16 should be:

PEACE Trial Investigators. Angiotensin-converting-enzyme inhibition in stable coronary artery disease. N Engl J Med 2004;351: 2058-68.