K. Matsumoto, T. Gondo, N. Hayakawa, T. Maeda, A. Ninomiya, and S. Nakamura, “The role of single instillation chemotherapy in patients who receive subsequent bacillus Calmette-Guérin: A retrospective single centre study, and systematic review of the literature”, CUAJ, vol. 9, no. 7-8, pp. E411–6, Jul. 2015.