Variant Creutzfeldt-Jakob disease: prion protein genotype analysis of positive appendix tissue samples from a retrospective prevalence study

An error in the electronic processing of this paper by James W Ironside and colleagues resulted in the second part of his email address being omitted (BMJ 2006;332:1186-8, 20 May). Correspondence about this paper should be emailed to james.ironside@ed.ac.uk.