共 36 条
[1]
[Anonymous], 1991, Lancet, V338, P131, DOI 10.1016/0140-6736(91)90133-A
[2]
[Anonymous], 1992, MMWR Recomm Rep, V41, P1
[3]
[Anonymous], 1989, Holistic Medicine
[4]
[Anonymous], 1990, EDITED MED IO
[5]
BAILEY LB, 1992, J AM DIET ASSOC, V92, P463
[7]
Predictors of red cell folate level in women attempting pregnancy
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1997, 277 (07)
:548-552
[8]
*CDC, 1998, MORBIDITY MORTALITY, V47, P1301