1. Webb TA, Sheps SG, Carney JA. Differences between sporadic pheochromocytoma and pheochromocytoma in multiple endocrine neoplasia, type 2. Am J Surg Pathol 1980; 4: 121–126.
2. Manger WM, Gifford RW. Clinical and Experimental Pheochromocytoma. Blackwell Science, Cambridge, MA, 1996.
3. Epstein FH, Eckhoff RD. The epidemiology of high blood pressure-geographic distributions and etiologic factors. In: Stamler J, Stamler R, Pullman TN eds. The epidemiology of hypertension. Grune and Stratton, New York, 1967, pp. 155–166.
4. Page LB. Epidemiologic evidence on the etiology of human hypertension and its possible prevention. Am Heart J 1976; 91: 527–534.
5. Goldfien A. Basic Endocrinology. Appleton and Lange, Norwalk, CT, 1998, pp. 370.