Thakkinstian, A., & Nickel, J. C. (2013). Efficacy of intravesical chondroitin sulphate in treatment of interstitial cystitis/bladder pain syndrome (IC/BPS): Individual patient data (IPD) meta-analytical approach. Canadian Urological Association Journal, 7(5-6), 195–200. https://doi.org/10.5489/cuaj.1257