Katsuo, Kosuke, Tetsuya Honda, Takaya Komori, Yo Kaku, and Kenji Kabashima. 2020. “Erosive Lichen Planus on the Extremities During Combination Therapy With Nivolumab and Radiation: A Second Case Report”. Acta Dermato-Venereologica 100 (6):1-2. https://doi.org/10.2340/00015555-3454.