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Subject
- Contraception991
- Birth control656
- Contraceptives317
- Oral contraceptives176
- History142
- Fertility, Human97
- Abortion95
- Family Planning88
- Intrauterine contraceptives77
- Women76
- Religious aspects71
- Research69
- Population62
- Health and hygiene61
- Social aspects58
- Catholic Church55
- Side effects48
- Family planning47
- Contraception Behavior46
- Health surveys46