[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

头围测量软尺应选无弹性的玻璃纤维或PVC材质并带锁扣定位,普通布尺会因拉伸产生0.5cm以上误差,头围是2岁内神经发育评估的关键指标

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