title: Pelvic inflammatory disease and the intrauterine device: a causal relationship?
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D000292:Pelvic Inflammatory Disease / Q000453:epidemiology / Q000209:etiology* / Q000635:transmission; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases