Ali Nafi, Omar, and Awni Mueen Shaheen. “MATERNAL AGE AND CONSANGUINITY AS RISK FACTORS FOR MENTAL RETARDATION AMONG CHILDREN IN SOUTH JORDAN”. European Scientific Journal, ESJ 9, no. 8 (March 30, 2013). Accessed January 21, 2026. https://eujournal.org/index.php/esj/article/view/892.