It was only with the growth of paediatrics and psychology in the twentieth century that studies could be carried out on a more objective, if still not always very scientific, basis.
只有在20世纪时，随着儿科学和心理学的发展，这些研究才能在一个更客观的基础上进行，即使这一基础仍然不一定很科学。
This divisional result tallied with the climatic condition and natural environment and therefore it could provide a scientific basis for the comprehensive division of agriculture and forestry.
区划结果与气候条件及自然环境相符合，可以为农、林业综合区划提供科学依据。
Objective To describe trends of the spectrum of disease and the cause of death with time, to provide a scientific basis for medical treatment and health service in children.
目的了解儿科疾病谱及死亡原因的年代变化趋势，为做好儿童疾病医疗和预防保健工作提供科学依据，以进一步有针对性地提高儿科医疗质量，降低医院内小儿病死率。
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