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Repeated measures plot of first and last vanadium level in those patients who had repeated levels. Vanadium levels (μg/L) were not normally distributed. While the median vanadium level lowered from 0.1510 to 0.1410 µg/L, and many patients demonstrated an increase of their vanadium level with repeated measures, this did not reach statistical significance (p=0.4140, Wilcoxon matched-pairs signed-rank test).
