Hartmann, Julia, Holger A. Haenssle, Alexander H. Enk, and Ferdinand Toberer. 2018. “Fast-Growing Painful Leg Ulcers in a 26-Year-Old Woman With Systemic Lupus Erythematosus: A Quiz”. Acta Dermato-Venereologica 99 (2):250-52. https://doi.org/10.2340/00015555-3044.