Hasan, Hayder Atta Abdul-Jabbar, and Muthana Ibrahim Maleek. 2025. “Levels of Dopamine and Beta-Endorphin Hormones in Iraqi Children With Autism Spectrum Disorder”. American Journal of Biology and Natural Sciences 2 (8):225-31. https://doi.org/10.51699/ajbns.v2i8.1368.