In the text, at page 14725, right column, line 19 and 20, the units are incorrectly given (μg/day instead of ng/day). The amended sentence is "Thereby, the daily urinary excretion values of 238 U over 3 days before healing soil ingestion were 3.9 ng/day ±1.5 ng/day, 8.1 ng/day ±0.6 ng/day and 9.0 ng/day ±1.2 ng/day (mean ± SD)."
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