A Multi-center Randomized Double-blind Comparative Clinical Trial of Levocetirizine and Cetirizine for the Treatment of Chronic Idiopathetic Urticaria
HAO Fei, LI Hui, LU Yuan-gang, YIN Rui, CHEN Jia-xiu, WU Jin-jin, SUN Ren-shan, DENG Jun
Chinese Journal of Dermatology . 2004, (6): 320 -322 .