9Stewart WF,van Booye N,Cundif GW,et al. Prevalence and burden of overactive bladder in the United States[ J]. World J Urol, 2003, 20(6) : 327 -336.
10Milsom I,Abrams P,Cardozo L,et al. How widespread are the symptoms of an overactive bladder and how are they managed: a populationbased prevalence study[J]. BJU lnt, 2001, 87(9): 760-766.