Drupal-Bibcite31<style face="normal" font="default" size="100%">Trends and determinants of length of stay and hospital reimbursement following knee and hip replacement: evidence from linked primary care and NHS hospital records from 1997 to 2014</style><style face="normal" font="default" size="100%">Trends and determinants of length of stay and hospital reimbursement following knee and hip replacement: evidence from linked primary care and NHS hospital records from 1997 to 2014</style>