Pacheco Coello, F. J. ., H. . Lovera, and B. N. . Ali. “Effect of Heavy Metals Lead (Pb), Cobalt (Co), Nickel (Ni), and Mercury (Hg) in Hematological Parameters, and Certain Liver Markers in People Using Hair Dyes”. Multidisciplinary &Amp; Health Education Journal, vol. 6, no. 2, May 2024, pp. 1159-73, http://journalmhe.org/ojs3/index.php/jmhe/article/view/112.