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   Teresa Linder et al, 2023, Veterinary and Comparative Oncology CrossRef
2. Paraganglioma of the Urinary Bladder: A Series of 22 Cases in a Single Center
   Hongyun Zhai et al, 2017, Clinical Genitourinary Cancer CrossRef
3. P
   Alan B. Ettinger et al, 2019, Synopsis of Neurology, Psychiatry and Related Systemic Disorders CrossRef