Qin, Yao, Yan Ji, and Yang Wang. “Multiple Pruritic Keratotic Papules in a Woman With Lower Back Pain: A Quiz”. Acta Dermato-Venereologica 100, no. 16 (September 30, 2020): 1–3. Accessed December 11, 2024. https://medicaljournalssweden.se/actadv/article/view/1790.