title: Oral contraceptives caused thrombosis in a monoovular twin with protein C deficiency, while the other, without medication, remained asymptomatic.
authors.forename: A
authors.initials: A
authors.lastname: Girolami
authors.forename: P
authors.initials: P
authors.lastname: Simioni
authors.forename: M T
authors.initials: MT
authors.lastname: Sartori
authors.forename: S
authors.initials: S
authors.lastname: Zanardi
mesh_terms: D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D003374:Coumarins / Q000627:therapeutic use; D004200:Diseases in Twins / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008599:Menstruation Disturbances / Q000188:drug therapy; D020151:Protein C Deficiency; D013924:Thrombophlebitis / Q000139:chemically induced*; D014430:Twins, Monozygotic
chemical_list: D003276:Contraceptives, Oral; D003374:Coumarins