Ovulation inhibitors and the risk of postoperative pulmonary embolism.
D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D005860:Germany, West; D006801:Humans; D011183:Postoperative Complications / Q000453:epidemiology; D011655:Pulmonary Embolism / Q000139:chemically induced / Q000453:epidemiology*
D003276:Contraceptives, Oral