1) Glenner GG and Grimley PM: Tumors of the extraadrenal paraganglion system (Including chemorecepters). Armed Forces Institute of Pathology, Washington, D. C., 1974.
2) Gruber H and Metson R: Carotid body paraganglioma regression with relief of hypoxemia. Ann Int Med 92: 800-802, 1980.
3) Zikk D, Shanon E, Rapoport Y and Samuel J: Sleep apnea following bilateral excision of carotid body tumors. Laryngoscope 93: 1470-1472, 1983.
4) Williams ED, et al: International histological classification of tumors. No. 23 histological typing of endocrine tumors. WHO, Geneva, 1980.
5) Lack EE, Gubilla AL and Woodruff JM: Paragangliomas of the head and neck region. A pathologic study of tumors from 71 patients. Human Pathology 10: 191-218, 1979.