Measuring case-mix and outcome for older people in acute hospital care across Europe: the development and potential of the ACMEplus instrument

M. Espallargues, I. Philp, D. G. Seymour, S. E. Campbell, W. Primrose, S. Arino, E. Dunstan, G. Lamura, P. Lawson, E. Mestheneos, B. Politynska, I. Raiha, ACMEplus Project Team