Wallberg, P, T Kaaman, and M. Lindberg. “Multiple Basal Cell Carcinoma. A Clinical Evaluation of Risk Factors”. Acta Dermato-Venereologica 78, no. 2 (April 16, 1998): 127–129. Accessed September 21, 2024. https://medicaljournalssweden.se/actadv/article/view/14573.