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Subject
- 72 Human
- 66 Article
- 59 Humans
- 44 Adult
- 35 Preschool child
- 34 Major clinical study
- 28 School child
- 27 Child, preschool
- 26 Controlled study
- 26 Infant
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Date issued
- 59 2010 - 2020
- 13 2005 - 2009