Davis, T., I. Makovey, M. L. Guralnick, and R. C. O’Connor. “Sacral Neuromodulation Outcomes for the Treatment of Refractory Idiopathic Detrusor Overactivity Stratified by Indication – Lack of Anticholinergic Efficacy Versus Intolerability”. Canadian Urological Association Journal, vol. 7, no. 5-6, June 2013, pp. 176-8, doi:10.5489/cuaj.1346.