Recommendations for follow-up of muscle-invasive bladder cancer patients: A consensus by the international bladder cancer network av Zuiverloon, TCM, van Kessel, KEM, Bivalacqua, TJ, Boormans, JL, Ecke, TH, Grivas, PD, Kiltie, AE, Liedberg, F, Necchi, A, van Rhijn, BW, Roghmann, F, Sanchez-Carbayo, M, Schmitz-Dräger, BJ, Wezel, F, Kamat, AM