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| Mean level prior to MIRPE (μg/g) | Mean level at bar removal (μg/g) | P value | Highest value at bar removal (μg/g) | |
|---|---|---|---|---|
| Chromium in tissue | 3.9 | 560.7 | <0.001 | 2789 |
| Nickel in tissue | 1.9 | 190.7 | <0.001 | 977 |
