title: [Epidemiological evaluation of long-term effects of hazardous substances].
abstract: The article deals with epidemiologic evaluation of long-term chemical effects. The authors stress difficulties in setting the "cause-effect" relationships and define some typical mistakes in such research.
authors.forename: G P
authors.initials: GP
authors.lastname: Lebedev
authors.forename: V L
authors.initials: VL
authors.lastname: Filippov
mesh_terms: D005500:Follow-Up Studies; D015386:Hazardous Substances / Q000009:adverse effects*; D006801:Humans; D009784:Occupational Diseases / Q000139:chemically induced* / Q000453:epidemiology / Q000401:mortality; D012106:Research; D013997:Time Factors
chemical_list: D015386:Hazardous Substances