8Marcia R Amorim, Mareelo AC, Orioli, et aL. Non - latin European de- scent could be a requirement for association of NTDs and MTHFR variant 677C > T[ J]. American Journal of Medical Genetics ,2007,143A : 1726.
9Moretti ME, Benjamin Baroz, Shawn Fried, et al. Maternal hyperther- mia and the risk for neural tube defects in offspring: Systematic review and meta-analysis [J]. Epidemiology, 2005, 16 (2): 216.
10Gambichler T, Armin Bader, Kirsten Sauermann, et al. Serum folate levels after UVA exposure: a two - group parallel randomised con-trolled trial (J) . BMC Dermatol, 2001, 1:8.
