Table 2. Frequencies of thrombophilias in the different groups.

	Protein C deficiency	Protein S deficiency	Antithrombin deficiency	G20210A mutation in the prothrombin gene	G1691A mutation in the factor V gene
Idiopathic (n=8)	1	2	0	0	0
Secondary (n=16)	1	1	0	0	1