Ikeda, Ayano, Masanori Hisaoka, Hiroyuki Goto, Yuichi Yoshida, and Osamu Yamamoto. “First Case of Allochronic Onset of Two Primary Dermatofibrosarcoma Protuberans Lesions Proved by COL1A1-PDGFB Fusion Gene Analysis”. Acta Dermato-Venereologica 102 (November 28, 2022): adv00822. Accessed May 21, 2026. https://medicaljournalssweden.se/actadv/article/view/2421.