Cunningham A S
J Pediatr. 1979 Nov;95(5 Pt 1):685-9. doi: 10.1016/s0022-3476(79)80711-8.
The advantages of breast-feeding in reducing morbidity was previously shown in a group of rural infants. Those observations are extended and refined. The protection afforded by breast-feeding is greatest during the early months, increases with the duration of breast-feeding, and appears to be more striking for serious illness. It operates independently of the effect of associated factors such as socioeducational status, family size, day-care exposure, and birth weight.
母乳喂养在降低发病率方面的优势先前已在一组农村婴儿中得到证实。这些观察结果得到了扩展和完善。母乳喂养提供的保护在婴儿早期最为显著，随着母乳喂养时间的延长而增加，并且对严重疾病的保护作用似乎更为明显。它独立于社会教育地位、家庭规模、日托接触和出生体重等相关因素的影响。
