Quek ML, Stein JP, Clark PE, Daneshmand S, Miranda G, Cai J, Groshen S, Cote RJ, Lieskovsky G, Quinn DI, Skinner DG. Microscopic and gross extravesical extension in pathological staging of bladder cancer. J Urol. 2004 Feb; 171(2 Pt 1):640-5.