Intervention fidelity in the definitive cluster randomised controlled trial of the Healthy Lifestyles Programme (HeLP) trial: findings from the process evaluation.
Jenny LloydSarah DeanSiobhan CreanorCharles AbrahamMelvyn HillsdonEmma RyanKatrina M WyattPublished in: The international journal of behavioral nutrition and physical activity (2017)
ISRCTN15811706.