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维生素B_(12)水平低可导致婴幼儿神经系统损害。补充维生素B_(12)可使患儿在短期内迅速康复。目前尚无有关长期神经系统损害结果的
Low levels of vitamin B_ (12) can lead to nervous system damage in infants. Vitamin B_ (12) can make children recover rapidly in a short time. There are currently no reports of long-term neurological damage