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Twins may protect against breast cancer

BMJ 1997; 314 doi: https://doi.org/10.1136/bmj.314.7084.845a (Published 22 March 1997) Cite this as: BMJ 1997;314:845
  1. Jessica Westall
  1. Clegg scholar, BMJ

    Women who give birth to twins may be protected against breast cancer, says a study from the Imperial Cancer Research Fund.

    The population based case-control study shows that their risk was reduced by almost a third compared with mothers who had had only one baby. Data on 47000 Swedish women under 50 who were not registered …

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