O. . B. Idonije, O. . A. Onigbinde, O. . O. Festus, S. . O. Agbebaku, and G. . O. Eidangbe, “Assessment of essential trace metals (iron, copper and selenium) and heavy metal (lead) in obese diabetics (type 2 diabetic) patients”, Sci. J. Med. Sci., vol. 2, no. 7, pp. 118-123, Jul. 2013.