Pregnant smokers are more likely to have a miscarriage or premature baby, while after birth children are more likely to die from sudden infant death syndrome.

怀孕的吸烟者更可能流产或是令孩子早产，而在出生后，孩子更可能死于婴儿猝死综合症。

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Several other listed causes of infant death, such as respiratory distress from underdeveloped lungs, should have been ascribed to premature birth, the study said.

该研究称，名单上一些别的的婴儿死亡原因，比如因为肺未发育完全导致的呼吸窘迫，也都应该归因于早产。

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Objective: to study the main factors of premature birth and its effects on the pregnant and infant.

目的：分析早产发生的主要因素及其对母儿的影响。

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Premature infants, who make up two-thirds of infant deaths, often suffer serious health problems at birth, with undeveloped lungs, organs and digestive systems.

WSJ: How Hospitals Save More Lives and Reduce Infections in Premature Babies

The program was developed in response to the shocking infant mortality statistics in the United States, as well as to prevent low birth weight and premature babies.

WHITEHOUSE: Advocating to End Food Insecurity