Double-blind, randomized comparison of systemic continuous infusion of 0.25 versus 0.50 mg/kg/24 h of Alteplase over 3 to 7 days for treatment of deep venous thrombosis in heparinized patients: results of the European Thrombolysis with rt-PA in Venous Thrombosis (ETTT) Trial - Bounameaux, H; Banga, J D; Bluhmki, E; Coccheri, S; Fiessinger, J-N; Haar-mann, W; Lockner, D; Mahler, F; Ninet, J; Schneider, P-A; de Torrente, A; van der Meer, J; Verhaeghe, R (Thromb Haemost, 1992)