External validation and comparison with other models of the International Metastatic Renal-Cell Carcinoma Database Consortium prognostic model: A population-based study

Daniel Y.C. Heng, Wanling Xie, Meredith M. Regan, Lauren C. Harshman, Georg A. Bjarnason, Ulka N. Vaishampayan, Mary Mackenzie, Lori Wood, Frede Donskov, Min Han Tan, Sun Young Rha, Neeraj Agarwal, Christian Kollmannsberger, Brian I. Rini, Toni K. Choueiri