To find out the changes of trace elements in perinatal period neonate, blood I, Zn, Fe and Pb were determined in1846 perinatal period neonate, compared the premature and small for gestational age infants( SGA) with healthy normal term infants.

• 为了解信宜市微量元素(、、、)围产儿的影响,对1871例围产儿脐血进行了检测,并对早产儿、于胎龄儿与健康足月适于胎龄儿作比较。