The Positive Choices trial: study protocol for a Phase-III RCT trial of a whole-school social marketing intervention to promote sexual health and reduce health inequalities

por Ruth Ponsford, Rebecca Meiksin, Elizabeth Allen, G. J. Melendez-Torres, Steve Morris, Catherine Mercer, Rona Campbell, Honor Young, Maria Lohan, Karin Coyle, Chris Bonell
Publicado 2021