Initiation of contraception postpartum

Applied logistic regression

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Risk of ovulation during lactation

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Breast feeding, birth spacing and their effects on child survival

Shyam Thapa, R. V. Short, Malcolm Potts · Nature · 1988 · 151 citations

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Clinical study of the lactational amenorrhoea method for family planning

A. Pérez, Miriam H. Labbok, John T. Queenan · The Lancet · 1992 · 132 citations · Full text

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Contraceptive effects of extended lactational amenorrhoea: beyond the Bellagio Consensus

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