1. Toteja GS, Singh P, Dhillon BS, Saxena BN, Ahmed FU, Singh RP, et al. Prevalence of anaemia among pregnant women and adolescent girls in 16 districts of India. Food Nutr Bull 2006; 27:311-5.
2. Singh S, Geddam JJ, Reddy GB, Pallepogula DR, Pant HB, Neogi SBet al. Folate, Vitamin B12, ferritin and haemoglobin levels among women of childbearing age from a rural district in South India. BMC Nutr 2017; 3:50.
3. Martin RH, Harper TA, Kelso W. Serum-folic-acid in recurrent abortions. Lancet 1965; 1:670-2.
4. George L, Mills JL, Johansson AL, Nordmark A, Olander B, Granath F,et al. Plasma folate levels and risk of spontaneous abortion. JAMA 2002; 288:1867-73.
5. Vanderlelie J, Scott R, Shibl R, Lewkowicz J, Perkins A, Scuff ham PA. First trimester multivitamin/mineral use is associated with reduced risk of pre-eclampsia among overweight and obese women. Matern Child Nutr 2016; 12:339-48.
6. Wang Y, Zhao N, Qiu J, He X, Zhou M, Cui H, et al. Folic acid supplementation and dietary folate intake, and risk of preeclampsia. Eur J Clin Nutr 2015; 69:1145-50.
7. Li Z, Ye R, Zhang L, Li H, Liu J, Ren A. Folic acid supplementation during early pregnancy and the risk of gestational hypertension and preeclampsia. Hypertension 2013; 61:873-9.
8. Bodnar LM, Himes KP, Venkataramanan R, Chen JY, Evans RW, Meyer JL, et al. Maternal serum folate species in early pregnancy and risk of preterm birth. Am J Clin Nutr 2010; 92:864-71.
9. Malinow MR, Rajkovic A, Duell PB, Hess DL, Upson BM. The relationship between maternal and neonatal umbilical cord plasma homocysts(e)ine suggests a potential role for maternal homocyst(e)ine in foetal metabolism. Am J Obstet Gynecol 1998; 178:228-33.
10. Cunningham F, Leveno K, Bloom S. Haematological disorders. In: William’s obstetrics: 23rd edition. New York: McGraw- Hill; 2009.
11. Courtemanche C, Elson-Schwab I, Mashiyama ST, Kerry N, Ames BN. Folate deficiency inhibits the proliferation of primary human CD8+ T lymphocytes in vitro. J Immunol 2004; 173:3186-92.
12. Christian P, Jiang T, Khatry SK, LeClerq SC, Shrestha SR, West KP Jr. Antenatal supplementation with micronutrients and biochemical indicators of status and subclinical infection in rural Nepal. Am J Clin Nutr 2006; 83:788-94.
13. Dunlap B, Shelke K, Salem SA, Keith LG. Folic acid and human reproduction—ten important issues for clinicians. J Exp Clin Assist Reprod 2011; 8: 2.
14. Crider KS, Bailey LB and Berry RJ. Folic Acid Food Fortification—Its History, Effect, Concerns, and Future Directions. Nutrients 2011; 3: 370-384.
15. Tettamanti L, Avantaggiato A, Nardone M, Silvestre-Rangil J, Tagliabue A. Cleft palate only: current concepts. Oral Implantol (Rome) 2017; 10 (1): 45-52.
16. Daly S, Mills JL, Molloy AM, Conly M, Mcpartlin J, Lee YJ, Young PB, Kirke PN, Weir DJ and Scott JM. Low-dose folic acid lowers plasma homocysteine levels in women of child-bearing age. QJ Med 2002; 95: 733–740.
17. Tighe P, Ward M, McNulty H, Finnegan O, Dunne A, Strain JJ, Molloy AM, Duffy M, Pentieva K, and Scott JM. A dose-finding trial of the effect of long-term folic acid intervention: implications for food fortification policy. Am J Clin Nutr 2011; 93: 11–8.