Impact of reducing portion sizes in worksite cafeterias: a stepped wedge randomised controlled pilot trial.
Gareth J HollandsEmma CartwrightMark PillingRachel PecheyMilica VasiljevicSusan A JebbTheresa M MarteauPublished in: The international journal of behavioral nutrition and physical activity (2018)
( ISRCTN52923504 ). Registered on 20th September 2016.