Beiko, Darren, S.C. Peter Bryson, C. David Bell, and Kenneth T. Pace. 2013. “Laparoscopic Excision of a Cystic Retroperitoneal Adenocarcinoma Arising in a Focus of Extra-Ovarian Endometriosis”. Canadian Urological Association Journal 4 (3):E71-E73. https://doi.org/10.5489/cuaj.861.