Commentary on “Conditional survival of patients with metastatic renal cell carcinoma treated with VEGF-targeted therapy: A population-based study.” Harshman LC, Xie W, Bjarnason GA, Knox JJ, MacKenzie M, Wood L, Srinivas S, Vaishampayan UN, Tan MH, Rha SY, Donskov F, Agarwal N, Kollmannsberger C, North S, Rini BI, Heng DY, Choueiri TK, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA