Weight change was the primary outcome.

体重变化是主要的结果。

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Low birth weight infant is a primary commonality health problem in the world.

低出生体质量儿是世界上一个主要的公共健康问题。

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Low birth weight infant is a primary commonality health problem in the world.

低出生体质量儿是世界上一个主要的公共健康问题。

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