Causal factors of macrosomia include maternal diabetes, postdates gestation, and obesity.巨大儿的好发因素包括母亲糖尿病, 过期妊娠及肥胖.Fetal weight should be estimated prior to labor in all postdates pregnancies.在产程开始之前估计胎儿体重.About 10 % of t...
优生学具有生物学上的意义.Eugenics has a biological significance.对 “ 积极 ” 优生学和 “ 消极 ” 优生学往往加以区分.A distinction is often made between " positive " and " negative " eugenics.消极优生学的范例是试图破坏一种对人体有害的隐性基因.An example of negative eugenics woul...