title: Letter: Oral contraceptives and health.
mesh_terms: D003276:Contraceptives, Oral / Q000008:administration & dosage / Q000009:adverse effects*; D003937:Diagnosis, Differential; D004967:Estrogens / Q000009:adverse effects; D005260:Female; D006801:Humans; D013923:Thromboembolism / Q000139:chemically induced*; D013924:Thrombophlebitis / Q000139:chemically induced / Q000175:diagnosis
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens