Letter: Oral contraceptives and thromboembolism.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D004967:Estrogens / Q000008:administration & dosage / Q000009:adverse effects; D004997:Ethinyl Estradiol; D005260:Female; D006801:Humans; D008656:Mestranol / Q000009:adverse effects; D013923:Thromboembolism / Q000139:chemically induced*
D003276:Contraceptives, Oral; D004967:Estrogens; D004997:Ethinyl Estradiol; D008656:Mestranol