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Sleep Duration, Schedule and Quality among Urban Chinese Children and Adolescents: Associations with Routine After-School Activities
- Xiaoxiao Jiang,
- Louise L. Hardy,
- Louise A. Baur,
- Ding Ding,
- Ling Wang,
- Huijing Shi
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- Published: January 22, 2015
- https://doi.org/10.1371/journal.pone.0115326