Risk of Cerebral Sinus Thrombosis in Oral Contraceptive Users Who Are Carriers of Hered Prothrombotic Cond
BMJ 316:589-592, deBruijn,S.F.T.M.,et al, 1998
Epidemiology of Stroke
JNNP 61:333-338, Khaw,K.T., 1996
Protein S Deficiency in Middle-Aged Women with Stroke
Neurol 42:1029-1033, Green,D.,et al, 1992