NAZ, Shagufta et al. Prevalence and Association of Different Levels of Intellectual Disability with Prenatal, Perinatal, Neonatal and Postnatal Factors: Prevalence and association of levels of ID. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences, [S. l.], v. 58, n. 3, p. 75–82, 2021. DOI: 10.53560/PPASB(58-3)667. Disponível em: http://ppaspk.org/index.php/PPAS-B/article/view/609. Acesso em: 4 dec. 2025.