[1] Mossey PA, Little J, Munger RG, Dixon MJ, Shaw WC. Cleft lip and palate. Lancet 2009;374(9703):1773 − 85. http://dx.doi.org/10.1016/S0140-6736(09)60695-4CrossRef
[2] Wehby GL, Collet B, Barron S, Romitti PA, Ansley TN, Speltz M. Academic achievement of children and adolescents with oral clefts. Pediatrics 2014;133(5):785 − 92. http://dx.doi.org/10.1542/peds.2013-3072CrossRef
[3] Liu JF, Zhang L, Li ZW, Jin L, Zhang YL, Ye RW, et al. Prevalence and trend of neural tube defects in five counties in Shanxi province of northern China, 2000 to 2014. Birth Defects Res A Clin Mol Teratol 2016;106(4):267 − 74. http://dx.doi.org/10.1002/bdra.23486CrossRef
[4] Liu JF, Wang LL, Zhang YL, Zhang L, Jin L, Li ZW, et al. Selected structural birth defects—Shanxi Province, China, 2000–2019. China CDC Wkly 2020;2(37):718 − 22. http://dx.doi.org/10.46234/ccdcw2020.196CrossRef
[5] Pei LJ, Zhu HP, Zhu JH, Ren AG, Finnell RH, Li Z. Genetic variation of infant reduced folate carrier (A80G) and risk of orofacial defects and congenital heart defects in China. Ann Epidemiol 2006;16(5):352 − 6. http://dx.doi.org/10.1016/j.annepidem.2005.02.014CrossRef
[6] Zhu JH, Ren AG, Hao L, Pei LJ, Liu JM, Zhu HP, et al. Variable contribution of the MTHFR C677T polymorphism to non-syndromic cleft lip and palate risk in China. Am J Med Genet A 2006;140A(6):551 − 7. http://dx.doi.org/10.1002/ajmg.a.31115CrossRef
[7] Millacura N, Pardo R, Cifuentes L, Suazo J. Effects of folic acid fortification on orofacial clefts prevalence: a meta-analysis. Public Health Nutr 2017;20(12):2260 − 8. http://dx.doi.org/10.1017/S1368980017000878CrossRef
[8] Xu WL, Yi L, Deng CF, Zhao ZL, Ran LR, Ren ZH, et al. Maternal periconceptional folic acid supplementation reduced risks of non-syndromic oral clefts in offspring. Sci Rep 2021;11(1):12316. http://dx.doi.org/10.1038/s41598-021-91825-9CrossRef
[9] Zhang XJ, Liu JF, Jin YS, Yang S, Song ZJ, Jin L, et al. Folate of pregnant women after a nationwide folic acid supplementation in China. Matern Child Nutr 2019;15(4):e12828. http://dx.doi.org/10.1111/mcn.12828CrossRef
[10] Ni WL, Yang WL, Yu JH, Li ZW, Jin L, Liu JF, et al. Umbilical cord concentrations of selected heavy metals and risk for orofacial clefts. Environ Sci Technol 2018;52(18):10787 − 95. http://dx.doi.org/10.1021/acs.est.8b02404CrossRef
[11] Yang WL, Guo YN, Ni WL, Tian T, Jin L, Liu JF, et al. Hypermethylation of WNT3A gene and non-syndromic cleft lip and/or palate in association with in utero exposure to lead: a mediation analysis. Ecotoxicol Environ Saf 2021;208:111415. http://dx.doi.org/10.1016/j.ecoenv.2020.111415CrossRef