Qian, Yue-Tong, Sergio Vano-Galvan, Jia-Wei Liu, Wei Liu, and Dong-Lai Ma. “Porokeratosis Ptychotropica on the Penis and Scrotum: A Case Report”. Acta Dermato-Venereologica 99, no. 2 (October 30, 2018): 246–247. Accessed November 27, 2024. https://medicaljournalssweden.se/actadv/article/view/3107.