da Cunha Bang, F, K Weismann, E Ralfkiaer, G Pallesen, and G. Lange Wantzin. 1986. “Erythema Elevatum Diutinum and Pre-AIDS”. Acta Dermato-Venereologica 66 (3):272-74. https://doi.org/10.2340/0001555566272274.