[Comparative study of the T delta IUD and the copper T 220 in Costa Rica].
D002986:Clinical Trials as Topic; D003364:Costa Rica; D005260:Female; D006801:Humans; D007433:Intrauterine Device Expulsion; D007434:Intrauterine Devices / Q000009:adverse effects; D007435:Intrauterine Devices, Copper / Q000009:adverse effects; D049590:Postpartum Period; D011247:Pregnancy; D011897:Random Allocation
Estudio comparativo del DIU T Delta y la T de Cobre 220 en Costa Rica.