搜索结果: 1-1 共查到“产科学 Family planning”相关记录1条 . 查询时间(0.091 秒)
The Effect of Breast-feeding in Contraception which is a Method of Natural Family Planning
Amenorrhea Postpartum amenorrhea
2010/4/27
Background: Bongaarts's model of Ci calculation was used to calculate the contribution of breast-feeding to family planning.
Methods: This cross-sectional study was conducted in the area of İs...