The incidence of diarrhea in artificial feeding group was higher than that of breastfeeding group ( P< 0. 05).
人工喂养婴儿腹泻发生率显著高于母乳喂养儿（P<0.05）。
The lead level in hippocampus in common feeding group of experimental group was higher than that in common feeding plus motion group(P<0.05).
海马铅浓度实验组组间比较，一般饲育高于一般饲养加运动（P<0.05）。
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