Medicines are identified through an evidence-based process and quality, safety, efficacy and cost-effectiveness are key selection criteria.
药物是通过循证方法来确定的，质量、安全、疗效和成本效益是关键性选择标准。
Key selection applies mainly to dimensions.
键选择主要适用于维度。
Key selection: Key selection in multidimensional data modeling is a difficult issue.
键选择：多维数据建模中的键选择是一个难题。
Key selection: Key selection in multidimensional data modeling is a difficult issue.
键选择：多维数据建模中的键选择是一个难题。
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