Neurology and the SkinJNNP 66:417-430, Hurko,O.&Provost,T.T., 1999
MR Imaging Porphyric EncephalopathyAJR 162:1218-1220, Aggarwal,A.,et al, 1994
Blindness of Cerebral Origin in Acute Intermittent PorphyriaArch Neurol 34:310, Lai,C.,et al, 1977