Riddick, LR, RH Brodkin, and RC Gibbs. “Palmar and Plantar Keratoderma With Hyperpigmentation and Gynecomastia. Report of a Case Associated With Primary Adenocarcinoma of the Lung”. Acta Dermato-Venereologica 51, no. 1 (January 1, 1971): 69–72. Accessed November 20, 2024. https://medicaljournalssweden.se/actadv/article/view/3621.