title: Factors of importance in the use-effectiveness of intrauterine devices.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D007433:Intrauterine Device Expulsion / Q000009:adverse effects; D007434:Intrauterine Devices / Q000009:adverse effects; D008875:Middle Aged; D010298:Parity; D011247:Pregnancy; D012959:Socioeconomic Factors