Correlation of tumor programmed death ligand-1 (PD-L1) expression and response to treatment with high-dose interleukin-2 (HD IL-2) in clear cell metastatic renal cell carcinoma (ccmRCC).Hilda Crispin, Neeraj Agarwal, Mohamed E. Salama et al.|Journal of Clinical Oncology|2014Cited by 4