研究人员分析了加拿大公共健康署1981年- - - 2003年出生在加拿大的500多万儿童的出生体重数据库。
Investigators analyzed the Public Health Agency of Canada's database on the birth weights of more than five million children born in Canada between 1981 and 2003.
研究人员分析了加拿大公共健康署1981年- - - 2003年出生在加拿大的500多万儿童的出生体重数据库。
Investigators analyzed the Public Health Agency of Canada's database on the birth weights of more than five million children born in Canada between 1981 and 2003.
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