SANJEEV KUMAR PANDEY (2013) “GENETIC POLYMORPHISMS OF MTHFR (677T AND 1298C) AND HOMOCYSTEINE METABOLISM AS MATERNAL RISK FACTOR FOR DOWN ’S SYNDROME PATIENTS IN NORTH INDIAN POPULATION”., International Journal of Pharma and Bio Sciences, 4(2), pp. 249–256. Available at: https://ijpbs.net/index.php/journal/article/view/2291 (Accessed: 3 July 2026).