1. Sarcoidosis: epidemiology and prognosis; a 15-year European study;Hillerdal;Am Rev Respir Dis,1984
2. Incidence of clinically identified sarcoidosis in a northwest United States population;Reich;Sarcoidosis Vasc Diffuse Lung Dis,1996
3. Racial differences in sarcoidosis incidence: a 5-year study in a health maintenance organization;Rybicki;Am J Epidemiol,1997
4. Sarcoidosis in Eastern Europe;Djuric;Sarcoidosis,1985
5. Pulmonary sarcoidosis in Nordic countries 1950–1982: epidemiology and clinical picture;Milman;Sarcoidosis,1990