Salima, S., K. H. Daundy, J. C. Mose, A. Y. Pramatirta, D. Suardi, and D. Pusianawati. “Comparison Levels of Copper, Zinc, and Cu/Zn Ratio of in Pre-Eclampsia and Normal Pregnancy”. Open Access Macedonian Journal of Medical Sciences, vol. 10, no. B, Sept. 2022, pp. 2392-8, doi:10.3889/oamjms.2022.10891.