Neurology and the SkinJNNP 66:417-430, Hurko,O.&Provost,T.T., 1999
The Spectrum of Neurol Dis Assoc with Antiphospholipid Antibd, Lupus Anticoag & Anticardiolipin AntibdArch Neurol 44:876-883, Levin,S.R.&Welch,K.M.A., 1987