In Arch Dis Child 2008;93(Suppl 1):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.