BABAKNEJAD, N., F. SAYEHMIRI, K. SAYEHMIRI, A. MOHAMADKHANI, and S. BAHRAMI. “The Relationship Between Zinc Levels and Autism: A Systematic Review and Meta-Analysis”. Iranian Journal of Child Neurology, Vol. 10, no. 4, Oct. 2016, pp. 1-9, doi:10.22037/ijcn.v10i4.9217.