Yu H, Chen Z, Ballman KV, Watson MA, Govindan R, Lanc I, Beer DG, Bueno R, Chirieac LR, Chui MH, Chen G, Franklin WA, Gandara DR, Genova C, Brovsky KA, Joshi MM, Merrick DT, Richards WG, Rivard CJ, Harpole DH, Tsao MS, van Bokhoven A, Shepherd FA, Hirsch FR. Correlation of PD-L1 Expression with Tumor Mutation Burden and Gene Signatures for Prognosis in Early-Stage Squamous Cell Lung Carcinoma. J Thorac Oncol. 2019 01; 14(1):25-36.