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The concentration of serum selenium in 395 individuals (187 males+208 females) living in the Canary Islands, Spain was determined by hydride generation atomic absorption spectrometry. The mean selenium concentration was 74.7+/-25.2 μg/l ranging between 7.86 and 182.3 μg/l. Twenty-two adults (7.2% of the total) had serum selenium concentrations under 45 μg/l. It is widely accepted that below this selenium...
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