title: Letter: Preoperative discontinuation of contraceptives.
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control*; D013514:Surgical Procedures, Operative; D013923:Thromboembolism / Q000517:prevention & control*
chemical_list: D003276:Contraceptives, Oral