Flosadóttir, Ellen, and Bolli Bjarnason. “A Non-Epidermolytic Epidermal Naevus of a Soft, Papillomatous Type With Transitional Cell Cancer of the Bladder: A Case Report and a Review of Non-Cutaneous Cancers Associated With the Epidermal Naevi”. Acta Dermato-Venereologica, vol. 88, no. 2, Jan. 2008, pp. 173-5, doi:10.2340/00015555-0365.