title: Letter: Radiographic location of the dalkon shield.
mesh_terms: D001466:Barium Sulfate; D005260:Female; D006801:Humans; D007047:Hysterosalpingography; D007434:Intrauterine Devices / Q000009:adverse effects*; D011247:Pregnancy; D014597:Uterine Rupture / Q000000981:diagnostic imaging* / Q000209:etiology
chemical_list: D001466:Barium Sulfate