The aim of this study was to determine if allopurinol decreases the rate of PEP.
本研究的目的是确定别嘌呤醇是否会降低PEP的发病率。
The aim of this study is to compile a mental health questionnaire for junior middle school students.
本研究的目的在于编制一份适合中国初中生的心理健康问卷。
The aim of this study was to analyze early risk factors and protective factors for allergic rhinitis at preschool age.
这项研究的主要目的是分析学龄期前过敏性鼻炎的早期风险因素和保护因素。
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