I got some oral reference doses of metals but not more than 8 heavy metals (Cu, Ni, Cr, As, Pb, Cd, Hg, Zn) from different journal papers. Now I want to get more than 10 heavy metals oral reference dose and the direct link of sources. All the reference doses of heavy metals from different journal papers are not same. That's why I want to get the recent value of oral reference dose(RfD) as well as carcinogenic slope factor (CSF).

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