Article ISI
JAMA Pediatrics  (2013)

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.