Increasing the proportion of healthier foods available with and without reducing portion sizes and energy purchased in worksite cafeterias: protocol for a stepped-wedge randomised controlled trial.
James P ReynoldsDaina KosīteBrier Rigby DamesLaura A BrocklebankMark PillingRachel PecheyGareth J HollandsTheresa M MarteauPublished in: BMC public health (2019)
The study was prospectively registered on ISRCTN (date: 24.05.19; TRN: ISRCTN87225572; doi: https://doi.org/10.1186/ISRCTN87225572).