Results of a randomized phase III trial of sequential intravesical therapy with mitomycin C and bacillus Calmette-Guerin versus mitomycin C alone in patients with superficial bladder cancer -: J. A.!Witjes, C. T. M.!Caris, N. A.!Mungan, F. M. J.!Debruyne and W. P. J.!Witjes -: J. Urol., 160:1668-1672, 1998 -: Reply