Drupal-Bibcite0<style face="normal" font="default" size="100%">Using mobile technology to support lower-salt food choices for people with cardiovascular disease: protocol for the SaltSwitch randomized controlled trial</style><style face="normal" font="default" size="100%">Using mobile technology to support lower-salt food choices for people with cardiovascular disease: protocol for the SaltSwitch randomized controlled trial</style>