1. Al Sawah, et al. Healthcare costs in psoriasis and psoriasis sub-groups over time following psoriasis diagnosis. J Med Econ, (2017) 20 (9) 982–990.
  2.  Suberythemogenic narrow-band UVB is markedly more effective than conventional UVB in treatment of psoriasis vulgaris, Walters, et al. Journal of the American Academy of Dermatology, Volume 40, Issue 6, June 1999, Pages 893-900
  3. Doshi, et al. Biologic therapy adherence, discontinuation, switching, and restarting among patients with psoriasis in the US Medicare population. J Am Acad Dermatol. 2016; 74(6): 1057–1065.
  4. Kevin McCaffrey: Rampant dissatisfaction with psoriasis drugs; MMM-online; <<