Milner, S., Sherker, S., Clinton-McHarg, T., Dray, J., Zukowski, N., Gonzalez, S., … Wolfenden, L. (2018). Cluster randomised controlled trial of a multicomponent intervention to support the implementation of policies and practices that promote healthier environments at junior sports clubs: study protocol. BMJ Open, 8(1), e018906. https://doi.org/10.1136/bmjopen-2017-018906 (Original work published 2018)