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Progestogen-only oral contraception and ectopic gestation.

Marie Smith, Martin Vessey, W Bounds, J. COLLINS WARREN

BMJ · 1974 · 14 citations · 1 references

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References

1

OUTCOME OF PREGNANCY IN WOMEN USING AN INTRAUTERINE DEVICE

Martin Vessey, Richard Doll, Bridget Johnson et al. · The Lancet · 1974 · 80 citations

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