Kadhim, L.H., Mohammed, M.T. and Al-Fartusie, F.S. 2022. Estimation of trace elements in workers at electrical substations and communication towers in Baghdad City. International journal of health sciences. 6, S4 (Aug. 2022), 9245–9254. DOI:https://doi.org/10.53730/ijhs.v6nS4.11960.