Why is incident of NTD(neuro tube disorder) so high in North Cathay??
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送交者: HunHunSheng 于 2005-1-04, 12:44:25:
回答: 突然明白了为什么南方大米产区的人容易缺铁. 由 fagus 于 2005-1-04, 12:41:42:
Intake of folic acid is not enough?
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