CORRECTION
==========


In *Arch Dis Child* 2008;**93**(Suppl 1):[A94](http://adc.bmj.com/lookup/volpage/93/A94)–A95 the co-authors of the published abstract were not mentioned. The full authorship is as follows: 1Sue Thornton, 1Laura Smith, 2Alysa Levene, 3Jonathan Reinarz, 3Andrew Williams. Their corresponding addresses are *1Children’s Directorate, Northampton General Hospital; 2Dept of the History of Medicine, Oxford Brookes University; 3Centre for the History of Medicine, Medical School, Birmingham University*.