Biopsy with Ureterorenoscopy Before Radical Nephroureterectomy is Associated with Increased Intravesical Recurrence in Urothelial Cancer Located in the Kidney oleh Meftun Culpan, Mehmet Caglar Cakici, Ferhat Keser, Mehmet Yigit Yalcin, Taner Kargi, Rıdvan Kayar, Erdal Abay, Gorkem Ozenc, Ali Kumcu, Mehmet Pehlivanoglu, Semih Turk, Erdem Kisa, Selcuk Sahin, Metin Ishak Ozturk, Alper Otunctemur, Resul Sobay, Huseyin Cihan Demirel, Omer Yilmaz, Gokhan Atis, Muhammet Abdurrahim Imamoglu, Asif Yildirim