A hitherto unknown splice site defect in the protein S gene (PROS1): the mutation results in allelic exclusion and causes type I and III protein S deficiency - Mustafa, S; Pabinger, I; Vàradi, K; Halbmayer, W-M; Lechner, K; Schwarz, Fischer M; Mannhalter, C (Br J Haematol, 1997)