SANDROCK, R S Prothrombin activity; a diagnostic test for early postoperative venous thrombosis. [electronic resource] - Transactions of the ... Meeting of the American Surgical Association. American Surgical Association. Meeting May 1948 - 277-88 p. digital Publication Type: Journal Article ISSN: 0066-0833 Subjects--Topical Terms: Diagnostic Tests, RoutineHumansProthrombinThrombosisVenous Thrombosis