Cerebrovascular Disease & Antiphospholipis Antibodies in SLE, Lupus-Like Dis, & Primary Antiphospholipid SyndAm J Med 86:391-399, Asherson,R.A.,et al, 1989
Cerebral Vasodilators (Second of Two Parts)NEJM 305:1560-1564, Cook,P.,et al, 1981