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. 2014 Apr 10;9(4):e93932. doi: 10.1371/journal.pone.0093932

Figure 2. Age standardized incidence ratios of ALS registry data at county level.

Figure 2

Abbreviation and explanation: significant counties (light green: ‘Confidence Interval’ CI below the cut-off value of 1 means less observed cases as expected; dark red: CI above the cut-off value means more observed cases as expected), not significant counties are displayed in dark-green and light red.