Nwobi, Nnenna L., Solomon K. Adedapo, Opebiyi A. Oyinlade, Olugbemi Olukolade, Ikeoluwa A. Lagunju, Nnodimele O. Atulomah, Ikechukwu A. Nwazuoke, and John I. Anetor. “Urinary Calcium: A Promising Predictive Biomarker for Early Recognition of Environmental Lead Exposure in Children”. International Journal of Research in Medical Sciences 7, no. 6 (May 29, 2019): 2265–2272. Accessed February 9, 2025. https://www.msjonline.org/index.php/ijrms/article/view/6475.