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

- Milner, Sharin; Sherker, Shauna; Wiggers, John; Wolfenden, Luke; Clinton-McHarg, Tara; Dray, Julia; Zukowski, Nadya; Gonzalez, Sharleen; Kingsland, Melanie; Ooi, Jia Ying; Murphy, Allan; Brooke, Daisy