Prospective studies for determining the duration of prevention in superficial tumors of the bladder

1. Ojea Calvo, A.
2. Nogueira March, J.L.
3. Figueiredo, L.
4. Jamardo, D.
5. Guate, J.L.
6. Barros, J.M.
7. Benavente, J.
8. Castro, M.