Outcomes of interest were birth weight, low birth weight, small size for gestational age, perinatal mortality and neonatal mortality.

检索结果中受到关注的是出生体重、低出生体重、小于胎龄儿、围产期死亡率和新生儿死亡率。

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The high risk factors were low birth weight, small gestational age, long term oxygen therapy and early severe anemia.

高危因素分别为低出生体重、小孕周、长期或高浓度氧疗以及早期严重贫血。

youdao

The high risk factors were low birth weight, small gestational age, long term oxygen therapy and early severe anemia.

高危因素分别为低出生体重、小孕周、长期或高浓度氧疗以及早期严重贫血。

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