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2. Progestational agents and blood coagulation 11;Ambrus;American Journal of Obstetrics and Gynecology,1969
3. The coagulation mechanism in oral contraception;Amris;Acta Obstetrica et Gynaecologica Scandinavica,1967
4. Observations on a relationship between steroid metabolism and the concentration of plasma fibrinogen;Amundson;Thrombosis et Diathesis Haemorrhagica,1963
5. New aspects of the thrombogenic effect of oral contraceptives;Astedt;American Heart Journal,1975