Drupal-Bibcite0<style face="normal" font="default" size="100%">Assessing the potential impact of a front-of-pack nutritional rating system on food availability in school canteens: A randomised controlled trial.</style><style face="normal" font="default" size="100%">Assessing the potential impact of a front-of-pack nutritional rating system on food availability in school canteens: A randomised controlled trial.</style>