title: Emergency department overcrowding: time for a quantitive measure.
authors.forename: Alan E
authors.initials: AE
authors.lastname: O'Connor
mesh_terms: D000701:Analgesics, Opioid / Q000627:therapeutic use; D003085:Colic / Q000188:drug therapy*; D003441:Crowding; D004636:Emergency Service, Hospital / Q000458:organization & administration*; D006297:Health Services Accessibility; D006801:Humans; D007674:Kidney Diseases / Q000188:drug therapy*
chemical_list: D000701:Analgesics, Opioid