在计划运作前和运作中，致命的婴儿疾病的发病率是多少？
What was the incidence of life-threatening infant diseases prior to and during the time the program was operational?
目的探讨不同喂养方式对婴儿疾病的影响，进一步促进母乳喂养。
Objective Analyse what influence on infant disease the various feeding ways have, then prompt to feed with mother milk.
自然法则决定男孩要比女孩略多一些，以此来抵消男孩更易患上婴儿疾病的缺陷。
Nature dictatesthatslightly more malesareborn than females to offset boys ' greater susceptibility to infant disease.
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