[Contraception with the intrauterine pessary: risk of pelvic inflammatory disease].
D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D000292:Pelvic Inflammatory Disease / Q000209:etiology*; D012306:Risk
Kontrazeption mit Intrauterinpessar: Risiko der Pelvic Inflammatory Disease.