Boeck, K, M Mempel, R Hein, and J. Ring. “Acquired Perforating Collagenosis in a Patient With Carcinoma of the Prostate”. Acta Dermato-Venereologica 77, no. 6 (December 12, 1997): 486–487. Accessed June 30, 2026. https://medicaljournalssweden.se/actadv/article/view/14928.