Results of a Multicenter Phase II Study of Atezolizumab and Bevacizumab for Patients With Metastatic Renal Cell Carcinoma With Variant Histology and/or Sarcomatoid FeaturesBradley A. McGregor, Toni K. Choueiri, Kathryn P. Gray et al.|Journal of Clinical Oncology|2019Cited by 147