Cluster randomised controlled trial of an online intervention to improve healthy food purchases from primary school canteens: a study protocol of the ‘click & crunch’ trial
Rebecca Wyse, Tessa Delaney, Pennie Gibbins, Kylie Ball, Karen Campbell, Sze Lin Yoong, Kirsty Seward, Rachel Zoetemeyer, Chris Rissel, John Wiggers, John Attia, Chris Oldmeadow, Rachel Sutherland, Nicole Nathan, Kathryn Reilly, Penny Reeves, Luke Wolfenden
BMJ Open Sep 2019, 9 (9) e030538; DOI: 10.1136/bmjopen-2019-030538