7JANG Y S, HWANG C H, SHIN J Y, et al. Age related changes on the morphology of the otoconia EJ~. Laryngoscope, 2006, 116: 996-1001.
8GIACOMINI P G, NAPOLITANO B, ALESSANDRINI M, et al. Recurrent paroxysmal positionalvertigo related to oral contraceptive treatment [J]. Gyneeol Endocrinol, 2006, 22: 5-8.
9CAKIR B O, ERCAN I, CAKIR Z A, et al. What is the true incidence of horizontal semicircular canal be nign paroxysmal positional vertigo [J]? Otolaryngol Head NeckSurg,2006, 134: 451- 454.
10AMOR DORADO J C,BARREIRA-FERNANDEZ M P,ARIAS-NUNEZ M C, et al. Benign paroxysmal positional vertigo and clinical test of sensory interac tion and balance in systemic sclerosis[J]. Otol Neu rotol, 2008, 29:1155-1161.