Low maternal folate concentrations and maternal MTHFR C677T polymorphism are associated with an increased risk for neural tube defects in offspring: a case-control study among Pakistani case and control mothers.
Nauman N, Jalali S, Shami S, Rafiq S, Große G, Hilger AC, Zhang R, Mansoor S, Ludwig M, Reutter H. Asia Pac J Clin Nutr. 2018; 27(1):253-260.