FRYE, MD, PHD, Richard E. Tetrahydrobiopterin Deficiency in Autism Spectrum Disorder. North American Journal of Medicine and Science, [S. l.], v. 7, n. 3, 2014. Disponível em: https://www.najms.com/index.php/najms/article/view/148. Acesso em: 20 apr. 2026.