Drupal-Bibcite0<style face="normal" font="default" size="100%">Endorsing single-unit transfusion combined with a restrictive haemoglobin transfusion threshold after knee arthroplasty</style><style face="normal" font="default" size="100%">Endorsing single-unit transfusion combined with a restrictive haemoglobin transfusion threshold after knee arthroplasty</style>