Choi, Hye-Seon, Hye-Young Ahn, and Jin-Ju Woo. “Heavy Metal Concentrations in the Blood and the Risk of Allergic Diseases for South Korean Children and Adolescents”. International Journal of Engineering and Technology 8, no. 1.4 (January 2, 2019): 527–532. Accessed February 25, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/25464.