Iwamoto, Yoichi, and Masafumi Kato. 2014. “A Case With Fistula Formation Between a Perinephric Retroperitoneal Abscess, a Ureter and a Descending Colon: Successful Outcome After Conservative Management”. Canadian Urological Association Journal 8 (9-10):e644-6. https://doi.org/10.5489/cuaj.1789.