RT Journal Article SR Electronic T1 Prevalence of factor V Leiden and prothrombin G20210A gene mutation JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1844 OP 1844 VO 26 IS 11 A1 Al-Aama, Jumana Y. YR 2005 UL http://smj.org.sa/content/26/11/1844.abstract AB