1. Beers MH, Berkow R, eds. The Merck Manual of Diagnosis and Therapy. 17th ed. Whitehouse Station, NJ: Merck Research Laboratories; 1999:2482–2485.
2. Epidemiology of sarcoidosis;Bresnitz;Epidemiol Rev.,1983
3. The riddle of sarcoidosis;Eklund;J Internal Med.,1996
4. Etiology of sarcoidosis;Moller;Clin Chest Med.,1997
5. Studies on the epidemiology of sarcoidosis in the United States;Gentry;J Clin Invest.,1955