Introduction: The non-muscle invasive bladder tumors should be stratified into risk groups so the adjuvant treatment after surgery can be suited to each patient. The high risk tumors should be treated with one to three-year maintenance intravesical bacillus Calmette-Guérin (BCG). It has been reported shortages of intravesical BCG and our hospital center was affected in 2014/2015, leading to a treatment change o...