Gaffney, P J The International and "NIH" units for thrombin--how do they compare? [electronic resource] - Thrombosis and haemostasis Sep 1995 - 900-3 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0340-6245 Subjects--Topical Terms: Blood Coagulation TestsHumansNational Institutes of Health (U.S.)Polyethylene GlycolsReference StandardsThrombin--standardsUnited StatesWorld Health Organization