Influence of the nt 2148 A to G Substitution (Pro 626 Dimorphism) in the PROS1 Gene on Circulating Free Protein S Levels in Healthy Volunteers - Reappraisal of Protein S Normal Ranges - Leroy-Matheron, C.; Duchemin, J.; Levent, M.; Gouault-Heilmann, M. (Thrombosis and Haemostasis, 2000)