School-based intervention to improve the mental health of low-income, secondary school students in Santiago, Chile (YPSA): study protocol for a randomized controlled trial
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Título de la Revista: | TRIALS |
Volumen: | 12 |
Editorial: | BIOMED CENTRAL LTD |
Fecha de publicación: | 2011 |
DOI/URL: |
10.1186/1745-6215-12-49 |