Thrombosis and Haemostasis, Table of Contents Thromb Haemost 1972; 28(02): 153-154DOI: 10.1055/s-0038-1649051 Editorial Schattauer GmbH Editorial Recommend Article Abstract Buy Article(opens in new window) Full Text References References 1 Schrogie J. J, Solomon H. M, and Zieve P. D. 1967; Effect of oral contraceptive on vitamin K defendent clotting activity. Clinical Pharmacology and Therapeutics 8: 670.