The firm cervical cap: 156 case records.
Lehfeldt
H
H
D000569:Americas; D003267:Contraception; D003274:Contraceptive Devices, Female; D019049:Developed Countries; D003906:Developing Countries; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D009656:North America; D012106:Research; D014481:United States
Americas; Barrier Methods; Case Studies; Cervical Cap--side effects; Contraception; Contraceptive Effectiveness; Contraceptive Methods--side effects; Developed Countries; Developing Countries; Evaluation; Family Planning; North America; Northern America; Research Methodology; Studies; United States; Use-effectiveness; Vaginal Barrier Methods--side effects