Drupal-Bibcite31<style face="normal" font="default" size="100%">Burden of Comorbidity in Systemic Lupus Erythematosus in the UK, 1999-2012</style><style face="normal" font="default" size="100%">Burden of Comorbidity in Systemic Lupus Erythematosus in the UK, 1999-2012</style>