The prevalence of moderate and severe F XII (Hageman factor) deficiency among the normal population: Evaluation of the Incidence of F XII deficiency among 300 healthy blood donors - Halbmayer, W-M; Haushofer, A; Schön, R; Mannhalter, C; Strohmer, E; Baumgarten, K; Fischer, M (Thromb Haemost, 1994)