Kimball AB, Schenfeld J, Accortt NA, Anthony MS, Rothman KJ, Pariser D. Incidence rates of malignancies and hospitalized infections events in psoriasis patients with or without treatment and a general population in the US: 2005-2009. Br J Dermatol. 2014 Feb;170(2):366-73. doi: 10.1111/bjd.12744.