Mahdian Joibari, R., A. . Movafagh, and A. . Molaei. “Association Between Maternal and Fetal MTHFR C677T and MTRR A66G Polymorphisms With the Risk of NTDs: A Systematic Review and Meta-Analysis Study”. Iranian Red Crescent Medical Journal, vol. 23, no. 11, Nov. 2021, doi:10.32592/ircmj.2021.23.11.1350.