Drupal-Bibcite31<style face="normal" font="default" size="100%">beta-Blocker usage and colorectal cancer mortality: a nested case-control study in the UK Clinical Practice Research Datalink cohort</style><style face="normal" font="default" size="100%">beta-Blocker usage and colorectal cancer mortality: a nested case-control study in the UK Clinical Practice Research Datalink cohort</style>