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The Ardennes and Eifel region is a geologically distinct area covering parts of Germany, Belgium, France, and Luxembourg where enhanced concentrations of radon occur in some houses and other buildings. An international case-control study is being conducted to examine the role of radon in the etiology of lung cancer in this area. The radon detectors used are issued by different laboratories involving a variety of detector types and processes. A series of intercomparisons in houses was therefore conducted under similar conditions of exposure in the field. In most situations the different detectors gave similar results. Nevertheless, in some situations open and closed detectors yielded different results. Therefore, estimates of radon exposure have to be adjusted if results are to be pooled.

Original publication




Journal article


Health Phys

Publication Date





558 - 563


Air Pollutants, Radioactive, Case-Control Studies, Environmental Exposure, Europe, Housing, Humans, Lung Neoplasms, Radiometry, Radon, Risk Assessment, Seasons