Gordon R R
Br Med J. 1977 Oct 8;2(6092):939-40. doi: 10.1136/bmj.2.6092.939.
Since 1962 there has been a disproportionately greater fall in the number of small (less than 1000 g) live births than total live births: this has applied to Sheffield and to England and Wales but more to the former. This may have affected falling neonatal mortality rates.
自1962年以来,体重不足1000克的低体重活产儿数量下降幅度远大于总活产儿数量下降幅度:这种情况在谢菲尔德以及英格兰和威尔士均有发生,但在前者更为明显。这可能影响了新生儿死亡率的下降。