Stiller-Winkler, R C3c concentrations in sera of persons living in areas with different levels of air pollution in Northrhine-Westphalia (Federal Republic of Germany). [electronic resource] - Environmental research Jun 1989 - 7-19 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0013-9351 Standard No.: 10.1016/s0013-9351(89)80018-0 doi Subjects--Topical Terms: Age FactorsAgedAir Pollution--analysisChildComplement C3--analysisComplement C3cEnvironmental Monitoring--methodsFemaleGermany, WestHumansMaleMiddle AgedRegression Analysis