References:
  1. Potu KC, Pownell BR, Shaikh KA, Bhatia V. Carotid Body Paraganglioma With An SDHD Gene Mutation: The Need For Genetic Testing. AACE Clinical Case Rep. 2016;2(2):e91-95.
  2. Else, Tobi. “Hereditary Paraganglioma-Pheochromocytoma Syndromes.” GeneReviews® [Internet]. U.S. National Library of Medicine, 4 Oct. 2018, www.ncbi.nlm.nih.gov/books/NBK1548/.