References:  

1 – brighamrad.harvard.edu, Transitional Cell Carcinoma of the Bladder: Sandra L Mondro, MD ; Marla Polger, MD

2 – mayoclinic.com, bladder cancer – risk factors

3 – medespace.com, Cancers : évaluation, traitement et surveillance. JM Andrieu & P Colonna Ed. ESTEM, Paris 1997.

4 – urologychannel.com, Bladder Cancer: Prognosis, Prevention

5- http://seer.cancer.gov/statfacts/html/urinb.html