On urgency and appropriateness.
Schulman
R D
RD
D004630:Emergencies; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D006301:Health Services Needs and Demand; D008329:Managed Care Programs / Q000458:organization & administration*; D011159:Population Surveillance / Q000379:methods; D012107:Research Design; D012189:Retrospective Studies; D014481:United States