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文献信息
Contraceptive MethodsOral ContraceptivesFamily PlanningPostcoital ContraceptionIntrauterine ContraceptionOral ProgestinsOvulation MethodContraceptive AgentsNational Health ServicesContraceptive MethodUnwanted PregnancyCervical CanalCervical MucusRisk PregnanciesSex BehaviorBlood CoagulationTemperature RiseFamily HealthMammary GlandBody Temperature
vol.10 (1977)
vol.8 (1975)
vol.6 (1973)