多胎生产被排除了,因为甚至在自然状态下,怀三胞胎也有很高的患并发症的风险。
Multiple births were excluded because even naturally conceived multiples have a high risk of complications, Romundstad says.
多胎生产被排除了,因为甚至在自然状态下,怀三胞胎也有很高的患并发症的风险。
Multiple births were excluded because even naturally conceived multiples have a high risk of complications, Romundstad says.
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