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北京大学生育健康研究所一项研究证实,可能导致新生儿出生缺陷的有5个高危因素。这是该所历时十几年、在全国范围内对2000万名孕期至7岁的儿童进行跟踪的研究结果。准妈妈年龄在35岁以上者:
Peking University Institute of Reproductive Health, a study confirmed that there may be five new risk factors for birth defects. This is the result of more than a decade-long study of 20 million children between the first trimester and the seventh in the nation. Mothers over the age of 35 are: