A. A. Saeed, H. A. Ataitalla, and S. T. A. Elmukashfi, “Evaluation of serum Manganese and Zinc in non-cancerous thyroid disorders in Khartoum State-Sudan”, J. Drug Delivery Ther., vol. 9, no. 2-s, pp. 497–499, Apr. 2019, doi: 10.22270/jddt.v9i2-s.2583.