母亲吸烟仍旧是婴儿猝死症的最大的危险因素之一。

Maternal smoking remains one of the biggest risk factors for cot death.

youdao

母亲吸烟仍旧是婴儿猝死症的最大的危险因素之一。

Maternal smoking remains one of the biggest risk factors for cot death.

youdao