Molecular basis for protein S (PS) hereditary deficiency: genetic defects observed in 18 patients with type-I (total PS) and type-IIa (free-PS) deficiencies - Borgel, D; Duchemin, J; Alhenc, M; Matheron, C; Aiach, M; Gandrille, S (J Lab Chem Med, 1996)
and the French Network on the Behalf of INSERM “Molecular abnormalities responsible for protein C and protein S deficiencies”