using the records linkage system of the mayo clinic and of the rochester epidemiology project , which accesses diagnostic data on the entire population of olmsted county , minnesota , we identified 45 new cases of idiopathic dilated cardiomyopathy ( dcm ) and 19 new cases of hypertrophic cardiomyopathy ( hcm ) among county residents for the years 1975-1984 .
C3828711
olmsted county
C0026183
minnesota