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Objectives: This study aimed to explore the moderation of pubertal status on the onset of sex differences in the prevale......
Objectives:This study aimed to explore the moderation of pubertal status on the onset of sex differences in the prevalen......
目的分析我国青少年失眠症状与学校表现的相关性。方法运用分层整群抽样法对上海市4 966名青少年进行失眠症状和学校表现的横断面......
