Drupal-Bibcite31<style face="normal" font="default" size="100%">Thirteen-year trend in the persistence with vitamin K antagonists for venous thromboembolism in the UK: a cohort study</style><style face="normal" font="default" size="100%">Thirteen-year trend in the persistence with vitamin K antagonists for venous thromboembolism in the UK: a cohort study</style>