title: A clinical study of pulmonary embolic disease.
mesh_terms: D000328:Adult; D000368:Aged; D003276:Contraceptives, Oral / Q000009:adverse effects; D005260:Female; D006761:Hospitals; D006801:Humans; D007238:Infarction / Q000175:diagnosis; D008168:Lung / Q000098:blood supply / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D009820:Ohio; D011183:Postoperative Complications; D011655:Pulmonary Embolism / Q000139:chemically induced / Q000175:diagnosis* / Q000209:etiology; D011859:Radiography; D012189:Retrospective Studies
chemical_list: D003276:Contraceptives, Oral