1. Effect of contraceptive drugs on the blood coagulation system;Ambrus;Hematol. Rev.,1970
2. Oral contraceptives, blood clotting and thrombosis;Poller;Brit. Med. Bull.,1976
3. Haemostatic, lipid and blood pressure profiles of women on oral contraceptives;Mead;Brit. J. Haematol.,1976
4. The effect of oral contraceptives on Factor VIII levels;Crowell;J. Lab. Clin. Med.,1971
5. Effect of oral contracep-tives on vitamin K-dependent clotting activity;Schrogie;Clin. Pharm. Ther.,1967