Bowers, N., & Porosnicu, M. (2021). Increased PD-L1 Tumor Expression Correlates with High Rate of Response to PD-1 Inhibitors in Patients with Unresectable, Recurrent, and Metastatic Cutaneous Squamous Cell Carcinoma. SKIN The Journal of Cutaneous Medicine, 5(1), 22–24. https://doi.org/10.25251/skin.5.1.5