A universal school-based psychological intervention to reduce emotional symptoms in adolescents in Santiago, Chile (YPSA): a cluster randomized controlled trial.
ARAYA R, FRITSCH R, SPEARS M, ROJAS G, MARTINEZ V, BARROILHET S, VOHRINGER P, GUNNELL D, STALLARD P, NOBLE S, GUAJARDO V, GAETE J, MONTGOMERY A. A
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