Drupal-Bibcite0<style face="normal" font="default" size="100%">Design and rationale of the MyHeartMate study: A randomised controlled trial of a game-based app to promote behaviour change in patients with cardiovascular disease</style><style face="normal" font="default" size="100%">Design and rationale of the MyHeartMate study: A randomised controlled trial of a game-based app to promote behaviour change in patients with cardiovascular disease</style>