Multicentric evaluation of a new PT reagent based on recombinant human tissue factor and synthetic phospholipids - Bader, R; Mannucci, P MM; Tripodi, A; Hirsh, J; Keller, F; Solleder, E M; Hawkins, P; Peng, M; Pelzer, H; Tejidor, L M; Ramirez, I F; Kolde, H J (Thromb Haemost, 1994)