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Natural Cycles° (@NaturalCycles) / Twitter
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Natural Cycles° (@NaturalCycles) / Twitter
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PDF] Evaluation of the effectiveness of selected natural fertility symptoms used for contraception: estimation of the Pearl index of Lady-Comp, Pearly and Daysy cycle computers based on 10 years of observation in
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Schwedische Behörde bestätigt Pearl-Index einer Verhütungs-App
Typical use effectiveness of Natural Cycles: postmarket surveillance study investigating the impact of previous contraceptive choice on the risk of unintended pregnancy | BMJ Open
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Contraceptive app "Natural Cycles" is being blamed for 37 unwanted pregnancies | Mashable
Typical use effectiveness of Natural Cycles: postmarket surveillance study investigating the impact of previous contraceptive choice on the risk of unintended pregnancy | BMJ Open
Fertility awareness and NFP: natural birth control