title: Calcium carbonate and L.U.D. pregnancies.
mesh_terms: D002119:Calcium Carbonate / Q000494:pharmacology*; D003271:Contraceptive Agents, Female / Q000037:antagonists & inhibitors; D003300:Copper / Q000037:antagonists & inhibitors; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy
chemical_list: D003271:Contraceptive Agents, Female; D003300:Copper; D002119:Calcium Carbonate