Drupal-Bibcite31<style face="normal" font="default" size="100%">Opportunities to diagnose chronic obstructive pulmonary disease in routine care in the UK: a retrospective study of a clinical cohort</style><style face="normal" font="default" size="100%">Opportunities to diagnose chronic obstructive pulmonary disease in routine care in the UK: a retrospective study of a clinical cohort</style>