title: Third-generation oral contraceptives and low free protein S as a risk for venous thrombosis.
authors.forename: P
authors.initials: P
authors.lastname: Villa
authors.forename: J
authors.initials: J
authors.lastname: Aznar
authors.forename: Y
authors.initials: Y
authors.lastname: Mira
authors.forename: M A
authors.initials: MA
authors.lastname: Fernández
authors.forename: A
authors.initials: A
authors.lastname: Vayá
mesh_terms: D000328:Adult; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects*; D017135:Desogestrel / Q000009:adverse effects*; D004997:Ethinyl Estradiol / Q000009:adverse effects*; D005260:Female; D005268:Femoral Vein; D006801:Humans; D011152:Popliteal Vein; D018455:Protein S Deficiency / Q000150:complications*; D012307:Risk Factors; D013927:Thrombosis / Q000139:chemically induced*
chemical_list: D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol; D017135:Desogestrel