Taştekin  E, Puyan Öz F, Kutlu Kemal A, Kaplan  M, Tokuç  B, Çaloğlu Yürüt V, Usta  U. The Relationship of Fuhrman Nuclear Grade, Tumor Stage and Sarcomatoid Differentiation with Survival in Renal Cell Carcinomas. Balkan Med J 2012;29:14-20