Factor VIII:C recovery and half life after infusion of steam-treated high purity factor VIII concentrate in severe haemophilia A: comparison of one-stage assay, two-stage assay and a chromogenic substrate assay - Hellstern, P; Kiehl, R; Miyashita, C; Schwendt, H; von Blohn, G; Kohler, M; Buttner, M; Wenzel, E (Thromb Haemost, 1986)