4Karatas M.Central vertigo and dizziness:epidemiology,differential diagnosis,and common causes.Neurologist,2008,14:355-364.
5Katsarkas A.Dizziness in aging:a retrospective study of 1194 cases.Otolaryngol Head Neck Surg,1994,110:296-301.
6Hanley K,O' Dowd T,Conaidine N.A systematic review of vertigo in primary care.Br J Gen Prsct,2001,51:666-671.
7Kroenke K,Hoffman RM,Einstadter D.How common are various causes of dizziness? A critical review.South Med J,2000,93:160-167.
8Niemensivu R,Pyykk(o) I,Wiener-Vacher SR,et al.Vertigo and balance problems in children--an epidemiologic study in Finland.Int J Pediatr Otorhinolaryngol,2006,70:259-265.
9Riina N,Ilmari p,Kentala E.Vertigo and imbalance in children:a retrospective study in a Helsinki University otorhinolaryngology clinic.Arch Otolaryngol Head Neck Surg,2005,131:996-1000.
