title: Letter: IUD and congenital malformation.
mesh_terms: D003300:Copper / Q000009:adverse effects*; D006801:Humans; D007231:Infant, Newborn; D007434:Intrauterine Devices / Q000009:adverse effects*; D017880:Limb Deformities, Congenital; D008297:Male
chemical_list: D003300:Copper