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

by Cova Felix, Guajardo Viviana, Vohringer Paul, Barroilhet Sergio, Martinez Vania, Noble Sian, Stallard Paul, Gunnell David, Fritsch Rosemarie, Montgomery Alan A, Araya Ricardo, Gaete Jorge, Gomez Alejandro, Rojas Graciela
Published 2011-02-01