Bed rest, elective surgery, and oral contraceptives.
D001777:Blood Coagulation / Q000187:drug effects; D001778:Blood Coagulation Disorders / Q000139:chemically induced; D003276:Contraceptives, Oral / Q000009:adverse effects* / Q000494:pharmacology; D005260:Female; D006801:Humans; D007103:Immobilization; D013514:Surgical Procedures, Operative; D013997:Time Factors
D003276:Contraceptives, Oral