Hasan, H. G., T. J. Mahmood, & P. A. Ismael. " Studies on the Relationship Between Chromium(III) ion and Thyroid Peroxidase Activity in Sera of Patients with Thyroid Dysfunction." Ibn AL- Haitham Journal For Pure and Applied Science [Online], 24.2 (2011): n. pag. Web. 1 Dec. 2019