Kondo,A;Kamihira,O;Ozawa,H(January 2009)."Neural tube defects: prevalence, etiology and prevention.".International Journal of Urology16(1): 49–57.doi:10.1111/j.1442-2042.2008.02163.x.பப்மெட்:19120526.
Castillo-Lancellotti,C;Tur,JA;Uauy,R(May 2013)."Impact of folic acid fortification of flour on neural tube defects: a systematic review.".Public Health Nutrition16(5): 901–11.doi:10.1017/s1368980012003576.பப்மெட்:22850218.
Canfield,MA;Honein,MA;Yuskiv,N;Xing,J;Mai,CT;Collins,JS;Devine,O;Petrini,Jet al.(November 2006)."National estimates and race/ethnic-specific variation of selected birth defects in the United States, 1999–2001.".Birth Defects Research. Part A, Clinical and Molecular Teratology76(11): 747–56.doi:10.1002/bdra.20294.பப்மெட்:17051527.
Bhide,P;Sagoo,GS;Moorthie,S;Burton,H;Kar,A(July 2013)."Systematic review of birth prevalence of neural tube defects in India.".Birth Defects Research. Part A, Clinical and Molecular Teratology97(7): 437–43.doi:10.1002/bdra.23153.பப்மெட்:23873811.
Kondo,A;Kamihira,O;Ozawa,H(January 2009)."Neural tube defects: prevalence, etiology and prevention.".International Journal of Urology16(1): 49–57.doi:10.1111/j.1442-2042.2008.02163.x.பப்மெட்:19120526.
Castillo-Lancellotti,C;Tur,JA;Uauy,R(May 2013)."Impact of folic acid fortification of flour on neural tube defects: a systematic review.".Public Health Nutrition16(5): 901–11.doi:10.1017/s1368980012003576.பப்மெட்:22850218.
Canfield,MA;Honein,MA;Yuskiv,N;Xing,J;Mai,CT;Collins,JS;Devine,O;Petrini,Jet al.(November 2006)."National estimates and race/ethnic-specific variation of selected birth defects in the United States, 1999–2001.".Birth Defects Research. Part A, Clinical and Molecular Teratology76(11): 747–56.doi:10.1002/bdra.20294.பப்மெட்:17051527.
Bhide,P;Sagoo,GS;Moorthie,S;Burton,H;Kar,A(July 2013)."Systematic review of birth prevalence of neural tube defects in India.".Birth Defects Research. Part A, Clinical and Molecular Teratology97(7): 437–43.doi:10.1002/bdra.23153.பப்மெட்:23873811.