Ashworth A, Waterlow J C
Arch Dis Child. 1982 Nov;57(11):882-4. doi: 10.1136/adc.57.11.882.
In developing countries, mortality among the under-fives is greatest during infancy. Limited data indicate that about 80% of these infant deaths occur in the first 6 months of life and two-thirds of the postneonatal deaths occur before 6 months. These findings strongly suggest that more attention should be focused on the causes of death in the very young infant.
在发展中国家，五岁以下儿童的死亡率在婴儿期最高。有限的数据表明，这些婴儿死亡中约80%发生在生命的前6个月，三分之二的新生儿后期死亡发生在6个月之前。这些发现强烈表明，应更加关注极幼龄婴儿的死亡原因。
