title: In search of better spacing device.
mesh_terms: D000293:Adolescent; D000328:Adult; D005193:Family Planning Services; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects; D007435:Intrauterine Devices, Copper / Q000009:adverse effects; D010298:Parity; D011247:Pregnancy