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本院于1986年12月~1987年7月对149例正常妊娠的孕妇头发及其新生儿头发、胎盘进行了7种微量元素测定。对象及方法149产妇系足月妊娠,无妊娠合并症。产妇年龄
The hospital from December 1986 to July 1987 on 149 cases of normal pregnant women hair and its newborn hair, placenta 7 kinds of trace elements were determined. Subjects and methods 149 maternal Department of full-term pregnancy, no pregnancy complications. Maternal age