FRACTION-RCC: nivolumab plus ipilimumab for advanced renal cell carcinoma after progression on immuno-oncology therapy ====================================================================================================================== * Toni K Choueiri * Harriet Kluger * Saby George * Scott S Tykodi * Timothy M Kuzel * Ruth Perets * Suresh Nair * Giuseppe Procopio * Michael A Carducci * Vincent Castonguay * Edmund Folefac * Chung-Han Lee * Sebastien J. Hotte * Wilson H Miller,, Jr. * Shruti Shally Saggi * Chung-Wei Lee * Heshani Desilva * Prabhu Bhagavatheeswaran * Robert J Motzer * Bernard Escudier