Objective Previous studies suggested that a number of obstetrical factors were associated with small-for-gestational-age (SGA) infant.
目的探讨产科因素及孕母文化程度与小于胎龄儿（SGA）之间的关系。
Objective To investigate the incidence of small for gestational age (SGA) and the perinatal correlation factors in western Guangxi.
目的探讨桂西地区小于胎龄儿（SGA）发生率及围生相关因素。
To study the levels of serum leptin and their roles on the growth of children aged 2~7 years old with small for gestational age(SGA).
瘦素参与2~7岁儿童的生长过程，并可作为评价此阶段儿童营养状况的指标。
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