Alsanousi, A. A., A. R. Ahmed, and G. Modawe. “Quantitative Analysis of Serum Levels of Trace Elements in Sudanese Snuff Dippers”. Sudan Journal of Medical Sciences (SJMS), Vol. 14, no. 3, Sept. 2019, pp. 152–161, doi:10.18502/sjms.v14i3.5215.