- Profile of the Billings Ovulation Method acceptors and use-effectiveness of the method in Korea
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Meng KH, Cho KS
- KMID: 1421446
- J Korean Med Sci.
- 1989 Mar;4(1):29-34.
- doi: 10.3346/jkms.1989.4.1.29
Data from a survey of 200 Billings Ovulation Method acceptors in Korea were used to describe a profile of these natural family planning acceptors, and to calculate use effectiveness rates... -
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