VertigoLancet 352:1841-1846, Baloh,R.W., 1998
Syncope:Current Diagnostic Evaluation and ManagementAnn Int Med 112:850-863, Manolis,A.S.,et al, 1990
Clinical Syndromes Assoc. with Basilar ImpressionArch Neurol 10:475, Taylor,A.R.,et al, 1964