Epidemiologic studies on the etiologic relationship of selenium and Keshan disease.
D000328:Adult; D009202:Cardiomyopathies / Q000453:epidemiology* / Q000209:etiology; D002675:Child, Preschool; D002681:China; D006801:Humans; D012621:Seasons; D012643:Selenium / Q000032:analysis / Q000172:deficiency*
D012643:Selenium