Association of maternal folic acid supplementation and offspring MTRR gene polymorphism with congenital heart disease: a hospital-based case-control study in Han population. - Li, Liuxuan; Ou, Jun; Chen, Yige; Chen, Qian; Luo, Manjun; Wang, Tingting; Zhang, Yingfan; Qin, Jiabi (Journal of Health, Population & Nutrition, 2024)