送交者: HunHunSheng 于 2005-1-04, 12:46:39:
回答: Why is incident of NTD(neuro tube disorder) so high in North Cathay?? 由 HunHunSheng 于 2005-1-04, 12:44:25:
Berry, R.J., et al. Prevention of neural tube defects with folic acid in China. New England Journal of Medicine, volume 341, number 20, November 11, 1999, pages 1485-1490.