Multi-institutional validation of the predictive value of Ki-67 in patients with high grade urothelial carcinoma of the upper urinary tract

Laura Maria Krabbe, Aditya Bagrodia, Ahmed Q. Haddad, Payal Kapur, Dina Khalil, Linda S Hynan, Christopher G. Wood, Jose A. Karam, Alon Z. Weizer, Jay D. Raman, Mesut Remzi, Nathalie Rioux-Leclercq, Andrea Haitel, Marco Roscigno, Christian Bolenz, Karim Bensalah, Arthur I Sagalowsky, Shahrokh F. Shariat, Yair Lotan, Vitaly Margulis