Urine cytology is a feasible tool for assessing erythematous bladder lesions after bacille Calmette‐Guérin (BCG) treatment. - Nurminen, Pertti; Ettala, Otto; Seppänen, Marjo; Taimen, Pekka; Boström, Peter J.; Kaipia, Antti (BJU International, 2019)