Bayerl, C, M Nürnberger, and I Moll. “Acral Persistent Papular Mucinosis (APPM) With Pruritus. A Case Report and Mast Cell Quantification”. Acta Dermato-Venereologica 74, no. 5 (September 1, 1994): 410–412. Accessed February 25, 2025. https://medicaljournalssweden.se/actadv/article/view/16420.