Editorial: Bladder preservation options for bladder cancer.

Competing Interests: Author ND is as an employee of Merck, Sharp & Dohme LLC, a subsidiary of Merck & Co., and may hold stock and/or options in Merck & Co.,Inc., Rahway, NJ,USA. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.