Agbonlahor, Osaretin James, and Mathias Abiodun Emokpae. “Levels of Some Essential Elements in Pregnant Women and Association With Low Birth Weight of Babies in Benin City”. Pakistan Journal of Nutrition, vol. 15, no. 6, May 2016, pp. 585–589, https://doi.org/10.3923/pjn.2016.585.589.