Goyal, Surbhi, et al. “Correlation of Mitotic Indices, AgNor Count, Ki-67 and Bcl-2 With Grade and Stage in Papillary Urothelial Bladder Cancer”. Urology Journal, vol. 11, no. 1, Mar. 2014, pp. 1238-47, doi:10.22037/uj.v11i1.1500.