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。
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。
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。
Methods:This study included 200 children with histories of low birth weight or premature infant, their incidence of the dental caries and developmental enamel defects were surveyed.
方法：选取低出生体重儿、早产儿及正常出生体重儿各2 0 0例进行乳牙龋齿、釉质发育缺陷统计调查。
Methods:This study included 200 children with histories of low birth weight or premature infant, their incidence of the dental caries and developmental enamel defects were surveyed.
方法：选取低出生体重儿、早产儿及正常出生体重儿各2 0 0例进行乳牙龋齿、釉质发育缺陷统计调查。
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