Late insertion of authors' affiliations in this editorial led to some confusion over authorship, which resulted in us adding a third, non-existent, author, T S Reene (10 April, pp 849-50). The article had only two authors, F Fausto Palazzo and Gregory P Sadler, both of whom worked at John Radcliffe Hospital in Oxford (as specialist registrar in endocrine surgery and consultant endocrine surgeon respectively) at the time of writing the editorial. F Fausto Palazzo is now T S Reeve fellow in endocrine surgery, Royal North Shore Hospital, Sydney, Australia. The authorship has been amended on bmj.com.