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Hawthorne G, Irgens LM, Lie RT. Outcome of pregnancy in diabetic women in northeast England and in Norway, 1994-7. BMJ 2000;321: 730-1.
The BMJ is retracting this study at the request of the authors because they have realised that a fundamental mistake was made in collecting the data. The authors give a full account on p 929, but the conclusions cannot be allowed to stand. An editorial by Richard Smith discusses retraction (p 883).
