Cai, T., D. Tiscione, A. Cocci, M. Puglisi, G. Cito, G. Malossini, and A. Palmieri. “Hibiscus Extract, Vegetable Proteases and Commiphora Myrrha Are Useful to Prevent Symptomatic UTI Episode in Patients Affected by Recurrent Uncomplicated Urinary Tract Infections”. Archivio Italiano Di Urologia E Andrologia, vol. 90, no. 3, Sept. 2018, pp. 203-7, doi:10.4081/aiua.2018.3.203.