Langner A, Wolska H, Fraczykowska M
Br J Clin Pract. 1989 Apr;43(4):148-50.
In a contralateral study a new coal tar gel was compared with a topical corticosteroid in the treatment of psoriasis. In 45 patients treated for four weeks, the coal tar gel proved significantly more effective.
在一项对侧研究中，将一种新的煤焦油凝胶与一种外用皮质类固醇在治疗银屑病方面进行了比较。在45例接受了四周治疗的患者中，煤焦油凝胶被证明效果显著更佳。
