Study protocol for the optimisation, feasibility testing and pilot cluster randomised trial of Positive Choices: a school-based social marketing intervention to promote sexual heal...

Por Ruth Ponsford, Elizabeth Allen, Rona Campbell, Diana Elbourne, Alison Hadley, Maria Lohan, G. J. Melendez-Torres, Catherine H. Mercer, Steve Morris, Honor Young, Chris Bonell
Publicado em 2018-05-01