References
- Biggs R., MacFarlane R. G. Blood Coagulation. Blackwell Scientific Publications, Oxford 1953; 50
- Brodthagen H. The preparation of prothrombin-free ox plasma in the estimation of prothrombin. Scand. J. clin. Lab. Invest. 1953; 5: 376
- Jordal R. 1970, Personal communication
- Owren P. A., Aas K. The control of dicumarol therapy and the quantitative determination of prothrombin and proconvertin. Scand. J. clin. Lab. Invest. 1951; 3: 201