Sheikh Z, Khazaei K. The Effectiveness of PECS Educational Therapy Method on Reducing the Symptoms of Attention Deficit and Behavioral Problems of Adolescents with Autism. JAYPS [Internet]. 2021 Jan. 29 [cited 2024 Dec. 18];1(1):161-76. Available from: https://journals.kmanpub.com/index.php/jayps/article/view/381