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据《中华预防医学杂志》1996年1月30卷第1期报道 河北省职工医学院李国庆等,为探讨食物与饮水对神经管缺陷发生的影响,将河北省12个出生
According to the “Chinese Journal of Preventive Medicine” in January 1996 Volume 30, No. 1 reported Hebei Medical College Li Guoqing, etc., to explore the impact of food and drinking water on the occurrence of neural tube defects will be born in Hebei Province 12