title: [Preliminary report on long-term disease surveillance in Liaoning Province].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002681:China; D003141:Communicable Diseases / Q000453:epidemiology; D006801:Humans; D008017:Life Expectancy; D008457:Measles / Q000276:immunology; D009026:Mortality