Gülpınar, Ömer et al. 2014. Clinical comparision of intravesical hyaluronic acid and hyaluronic acid-chondroitin sulphate therapy for patients with bladder pain syndrome/interstitital cystitis. Canadian Urological Association Journal. 8, 9-10 (Sep. 2014), e610–4. DOI:https://doi.org/10.5489/cuaj.2036.