Drupal-Bibcite31<style face="normal" font="default" size="100%">Approach to record linkage of primary care data from Clinical Practice Research Datalink to other health-related patient data: overview and implications</style><style face="normal" font="default" size="100%">Approach to record linkage of primary care data from Clinical Practice Research Datalink to other health-related patient data: overview and implications</style>