Bamidele, J. A.; Idowu, A. B.; Ademolu, K. O.; Akinloye, O. A.; Bamgbola, A. A. Heavy Metal Accumulation and Biochemical Evaluation of Earthworms from Sawmills in Abeokuta, South-Western Nigeria. Rev. Biol. Trop. 2015, 63, 1213–1221.