Liu, Jia-Wei, Jie Zhang, and Hong-Zhong Jin. 2026. “Swelling of the Left Upper Limb With Red Papules, Necrosis and Crusting: A Quiz”. Acta Dermato-Venereologica 106 (May):adv-2025. https://doi.org/10.2340/actadv.v106.adv-2025-0120.