TY - RPRT TI - Comparing in-patient classification systems: a problem of non-nested regression models. AU - A R Willan AU - W Ross AU - T A Mackenzie PY - 1992 DO - 10.1002/sim.4780111006 UR - https://pubmed.ncbi.nlm.nih.gov/1518993/ ID - 1518993 ER -