Bowers N, Porosnicu M. 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. J of Skin [Internet]. 2021 Jan. 1 [cited 2024 Jul. 4];5(1):22-4. Available from: https://jofskin.org/33014/index.php/skin/article/view/1138