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Ponsford R, Allen E, Campbell R, Elbourne D, Hadley A, Lohan M, Melendez-Torres GJ, Mercer CH, Morris S, Young H, Bonell C. Study protocol for the optimisation, feasibility testing and pilot cluster randomised trial of Positive Choices: a school-based social marketing intervention to promote sexual health, prevent unintended teenage pregnancies and address health inequalities in England. Pilot and Feasibility Studies. 2018 May 23;4(1):102. doi: 10.1186/s40814-018-0279-3. |