Fig. 2

Case control study on MM in Casale Monferrato area. Spatial distribution of the residences of cases (triangles) and controls (circles) in the geographic area of LHA (solid line), approximately 2500 km2 around Casale Monferrato (bold solid line). Longest-held residences after excluding 20 years before the date of diagnosis of the index case. The location of the AC plant is also indicated (red triangle). [R Spatstat]