Ishii, Riku, Noriyuki Otsuka, Takashi Anan, Yuhei Yamamoto, and Taku Maeda. “A 4-Year-Old Boy With a Red Nodule on His Hand: A Quiz”. Acta Dermato-Venereologica 105 (January 28, 2025): adv41071. Accessed July 18, 2026. https://medicaljournalssweden.se/actadv/article/view/41071.