Time, Psoriasis Area and Severity Index and Dermatology Life Quality Index of patients with psoriasis who drop out of clinical trials on etanercept because of lack of efficacy: a pooled analysis from 10 clinical trials - Nast, A.; Dilleen, M.; Liyanage, W.; Aikman, L.; Szczypa, P.; Dressler, C. (British Journal of Dermatology, 2018)