On computing failure rates
- PMID: 2272384
On computing failure rates
Comment on
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Contraceptive failure of the ovulation method of periodic abstinence.Fam Plann Perspect. 1990 Mar-Apr;22(2):65-75. Fam Plann Perspect. 1990. PMID: 2189750 Clinical Trial.
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[How do self-observed cycle symptoms correlate with ovulation?].Zentralbl Gynakol. 1996;118(12):650-4. Zentralbl Gynakol. 1996. PMID: 9082700 German.
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