Engin, Burhan, Mustafa Özdemir, Ali Balevi, and Inci Mevlitoğlu. 2008. “Treatment of Chronic Urticaria With Narrowband Ultraviolet B Phototherapy: A Randomized Controlled Trial”. Acta Dermato-Venereologica 88 (3):247-51. https://doi.org/10.2340/00015555-0434.