Roels, H., Lauwerys, R., Buchet, J.-P., Bernard, A., Chettle, DR., Harvey, TC., & Alhaddad, IK. (1981). Invivo Measurement of Liver and Kidney Cadmium in Workers Exposed To This Metal - its Significance With Respect To Cadmium in Blood and Urine. Environmental Research, 26(1), 217-240. https://doi.org/10.1016/0013-9351(81)90199-7 (Original work published 1981)