[Ways to improve epidemiological surveillance].
D003140:Communicable Disease Control / Q000379:methods*; D003141:Communicable Diseases / Q000453:epidemiology; D003199:Computer Systems; D004812:Epidemiologic Methods; D006801:Humans; D011446:Prospective Studies; D014586:USSR
Puti sovershenstvovaniia épidemiologicheskogo nadzora.