This study used sophisticated modeling of emissions .
As a proxy for exposure to dioxins modeling .
Concentrations of ground-level representing the best.
Surrogates for the measurement of dioxins in the past.
Given that no previous measurements . ( In soil or blood
Living in the vicinity) has been performed. Third, because the
Geographic level used in this study were able to allocate.
Exposure to different cases of NHL that live in the same city.
But not in the same block , thus making exposure.
By chance ( But we must think
Living within the shape, homogeneous.
A ) Fourth, the total number of cases ( 3974) .