Retraction of paper on maternal diabetes

The table in this letter by Gillian Hawthorne and colleagues contained an error introduced by us when we reformatted the submitted table (18 October, p 929). In the first section (perinatal mortality), the number of mothers with diabetes in northeast England should read 101 516 [not 181 132]. Additionally, we confused authors' affiliations. Narve Moe is affiliated to the department of obstetrics and gynaecology, National Hospital, Oslo, and Lorentz M Irgens and Rolv T Lie are affiliated to the Medical Birth Registry of Norway, the Norwegian Institute of Public Health, and the University of Bergen.