Abstract
Unlike previously reported Zn and Se levels were found to be the same in the hair of mentally retarded children and controls. Non-essential toxic Ag concentration was low whereas that of Hg, Au and Sc rather high in mentally retarded children.
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Bhandari, H.P.S., Lal, G., Sidhu, N.P.S. et al. Trace element analysis of hair of mentally retarded children. Journal of Radioanalytical and Nuclear Chemistry Letters 119, 379–385 (1987). https://doi.org/10.1007/BF02162048
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DOI: https://doi.org/10.1007/BF02162048