@misc{indiciae327a9f5a4a02, title = {Emergency department categorization: a historical perspective.}, author = {R H Cales}, year = {2000}, doi = {10.1111/j.1553-2712.2000.tb01904.x}, url = {https://pubmed.ncbi.nlm.nih.gov/10894253/}, note = {Source identifier: 10894253} }