Drupal-Bibcite31<style face="normal" font="default" size="100%">Influence of pre-existing multimorbidity on receiving a hip arthroplasty: cohort study of 28 025 elderly subjects from UK primary care</style><style face="normal" font="default" size="100%">Influence of pre-existing multimorbidity on receiving a hip arthroplasty: cohort study of 28 025 elderly subjects from UK primary care</style>