title: [A study on the relationship between the shape of uterine cavity, uterine contractility pressure and expulsion rate of stainless steel ring IUD].
authors.forename: J G
authors.initials: JG
authors.lastname: Wang
mesh_terms: D001208:Asia; D001695:Biology; D002681:China; D003267:Contraception; D003906:Developing Countries; D005193:Family Planning Services; D005202:Asia, Eastern; D005835:Genitalia; D005836:Genitalia, Female; D007434:Intrauterine Devices; D010827:Physiology; D012106:Research; D012107:Research Design; D014566:Urogenital System; D014599:Uterus
keywords: Asia; Biology; China; Contraception; Contraception Termination; Contraceptive Methods; Developing Countries; Eastern Asia; Family Planning; Genitalia; Genitalia, Female; Iud; Iud, Unmedicated; Measurement; Physiology; Research Methodology; Urogenital System; Uterus