Rational diagnosis of deep vein thrombosis (RADIA DVT) in symptomatic outpatients with suspected DVT: simplification and improvement of decision rule analysis for the exclusion and diagnosis of DVT by the combined use of a simple clinical model, a rapid ELISA D-dimer test, and compression ultrasonography (CUS) - Michiels,J.J. (Sem Thromb Hemost, 1998)