Buhl, T., Gregor Wienrich, B., Sieblist, C., Schön, M. P., & Seitz, C. S. (2010). Development of Segmental Superficial Actinic Porokeratosis during Immunosuppressive Therapy for Pemphigus Vulgaris. Acta Dermato-Venereologica, 90(2), 212–213. https://doi.org/10.2340/00015555-0800