Cai, T.; Cocci, A.; Tiscione, D.; Puglisi, M.; Di Maida, F.; Malossini, G.; Verze, P.; Palmieri, A.; Mirone, V.; Bjerklund Johansen, T. E. L-Methionine Associated With Hibiscus Sabdariffa and Boswellia Serrata Extracts Are Not Inferior to Antibiotic Treatment for Symptoms Relief in Patients Affected by Recurrent Uncomplicated Urinary Tract Infections: Focus on Antibiotic-Sparing Approach. Arch Ital Urol Androl 2018, 90, 97-100.