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2. Aeromedical transportation and general aviation;Gibbons;Aerospace Med,1971
3. The impact of an air ambulance system on an established trauma center;Schwab;J Trauma,1985
4. Five-year study of emergency aeromedical evacuation in the United States;Johnson;Aviat Space Environ Med,1976
5. Evaluation of an emergency air transport service as a component of a rural EMS system;Urdaneta;Am Surg,1984