Fournier, José R., et al. “Bladder Pheochromocytoma: Case Presentation and the Use of OctreoScan for Localization of Extra-Adrenal Tumor Sites in a Pediatric Patient”. Puerto Rico Health Sciences Journal, vol. 27, no. 1, Jan. 2008, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/46.