Unverified80% confidenceTradeoffTime unknown
单独叶酸与复合B族/多维片的权衡:单独叶酸剂量精准可控,适合仅需补叶酸的备孕期;复合制剂(含B12、B6)适合已确认贫血或希望一并补充的人群,但需核查叶酸剂量是否达标而非仅看是否含叶酸
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