[KongchangAI]
Unverified85% confidenceFactTime unknown

孕期营养类书籍中,叶酸补充推荐量(备孕及孕早期0.4-0.8mg/天)、钙和铁的补充时间点属于有明确医学共识的内容,可作为验证书籍科学性的参考锚点

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