Owren, Paul A. (1905–1990), Norwegian hematologist. Owren conducted research on diseases of the blood, blood coagulation, thrombosis, coronary artery disease, and anticoagulin therapy. In 1947 he published a monograph on blood coagulation in which he reported on his study of an abnormal bleeding tendency in a woman caused by a deficiency of a newly discovered coagulation-promoting globulin. He called this globulin factor V. The condition caused by a deficiency of factor V is called parahemophilia or Owren's disease.