TY - RPRT TI - Regional differences in hospital utilization. How much can be traced to population differences? AU - J R Knickman AU - A M Foltz PY - 1984 DO - 10.1097/00005650-198411000-00001 UR - https://pubmed.ncbi.nlm.nih.gov/6503399/ ID - 6503399 ER -