Surgery and the pill.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D013514:Surgical Procedures, Operative; D013924:Thrombophlebitis / Q000139:chemically induced
D003276:Contraceptives, Oral; D003278:Contraceptives, Oral, Hormonal