1 .足月儿(fullterminfant)37周≤ GA & lt .2 .早产儿(preterminfant)28周≤ GA & lt .3 .过期产儿(post-term infant)GA ≥ 42周。1 .低出生体重(low birth weight,LBW)儿BW & lt .4 .正常出生体重(normal birth weight,NBW)儿2500g ≤ BW ≤ 4000g。5 .巨大(macrosomia)儿BW & gt .1 .小于胎龄儿(smal ......