Biopsychosocial Factors Associated with Mental Retardation in Children Aged 6-17 Years in Tulungagung District, East Java. J Epidemiol Public Healt [Internet]. 2017 Jun. 17 [cited 2026 Feb. 11];2(2):119-2. Available from: https://www.jepublichealth.com/index.php/jepublichealth/article/view/40