Roels, H., Lauwerys, R., Buchet, J.-P., Bernard, A., Garvey, JS., & Linton, HJ. (1983). Significance of Urinary Metallothionein in Workers Exposed To Cadmium. International Archives of Occupational and Environmental Health, 52(2), 159-166. https://doi.org/10.1007/BF00405419 (Original work published 1983)