TY - BOOK ED - Hea ED - Health Education Authority TI - Folic acid and the prevention of neural tube defects: guidance for health service purchasers and providers. HEA. 1996 SN - 0752105779 PY - 1996/// PB - HEA KW - Neural tube defects KW - Abnormalities KW - Folic acid KW - Prevention and control ER -