Rapaport, S.I. , Aas, K., AND Owren, P.A.: The effect of glass upon the activity of the various clotting factors. J. Clin. Invest. , 34: 9, 1955.
8.
Shapiro, S., Sherwin, S., Redish, M., AND Campbell, H.A.: Prothrombin estimation: a procedure and clinical interpretations. Proc. Soc. Exper. Biol. &Med., 50: 85, 1942.
9.
Hurn, M., Barker, N.W., AND Magath, T.B.: The determination of prothrombin time following the administration of Dicumarol, 3-3'-methylenebis (4-Hydroxy Coumarin) with special reference to thromboplastin . J. Lab. & Clin. Med., 30: 432, 1945.
10.
Quick, A.J. : On quantitative relationship between calcium and prothrombin. Am. J. Physiol., 148: 211, 1947 .
11.
Owren, P.A. : Control of anticoaculant therapy. Arch. Int. Med., 111: 166, 1963.
12.
Rapaport, S.I. , AND Ames, S.B.: Relation between levels of plasma thromboplastin component (PTC) and prothrombin times by the P and P and Quick methods in patients receiving warfarin. New England J. Med. , 267: 125, 1962.
13.
Owren, P.A.: Proceedings of the 1st International Conference. In Thrombosis and Embolism, p. 1222. Benno Schwabe & Co., Basel, 1954.
14.
Ware, A.G., AND Sterling, R.E.: The modified-Owren prothrombin test: use in prothrombin consumption and in micro procedures on capillary blood. In The Filter, p. 51. California Association of Medical Laboratory Technologists, 1961.
15.
Hill, A.B., Marshall, J., AND Shaw, D.A.: Cerebrovascular disease: trial of long term anticoagulant therapy . Brit. M. J.5311: 1003, 1962.
16.
Blake, T.M. , Orr, E.R., AND Simmons, J.W.: Ineffectiveness of anticoagulants in myocardial infarction. Am. Heart J.63: 462, 1962.
17.
Marple, C.O. , AND Wright, I.S.: Thromboembolic Conditions and Their Treatment with Anticoagulants, p. 135. Charles C Thomas, Springfield, Illinois, 1950 .
18.
Borchgrevink, C.F.: Long-term anticoagulant therapy in angina pectoris and myocardial infarction. Acta med. scandinav. Suppl.359, 1960.