Hello Fran, my name is Robert and I responded to Hector who can fill you in on my offer, but since y’all don’t know me perhaps I can steer you toward a place to find answers. Go to google and type in nizam, a and that should lead you to her publications concerning urothilial carcinoma and of course (unless Hector already told you) I have an appointment with her this Monday which among other things we will be discussing my issues with bladder cancer & the 2 times that I had surgery for bladder cancer. I am only here to perhaps help someone like I have been helped here. Mayo is truly totally full of sharing, caring, and just downright good folks. At your pleasure, Robert or also known here as Chebo54.