Women who suffered from extreme early morning sickness were three times more likely to give birth prematurely and the baby was nearly three times more likely to be of low weight.

有严重清晨恶心呕吐现象的孕妇有比普通孕妇多三倍的可能性早产，她们的婴儿出现体重过轻现象的可能也增加了近三倍。

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Women who suffered from extreme early morning sickness were three times more likely to give birth prematurely and the baby was nearly three times more likely to be of low weight.

有严重清晨恶心呕吐现象的孕妇有比普通孕妇多三倍的可能性早产，她们的婴儿出现体重过轻现象的可能也增加了近三倍。

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