Avoiding Pitfalls in the Diagnosis of Subarachnoid HemorrhageNEJM 342:29-36, Edlow,J.A.&Caplan,L.R., 2000
Retinal Hemorrhages, Its Significance in 100 Patients With Acute Encephalopathy of Unknown CauseArch Neurol 36:691-694, Keane,J.R., 1979