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7. True costs of air medical vs. ground ambulance systems. Bruhn JD, Williams KA, Aghababian R. Air Med J; 1993 Aug; 12(8):262-8. PubMed ID: 10127870 [Abstract] [Full Text] [Related]
17. 1990 AAMS (Association of Air Medical Services) financial survey. Part I: Air transport charges. Kruppa RM. J Air Med Transp; 1990 Apr; 9(4):8-13. PubMed ID: 10104949 [No Abstract] [Full Text] [Related]
19. The development of the nation's oldest operating civilian hospital-sponsored aeromedical helicopter service. Thomas F. Aviat Space Environ Med; 1988 Jun; 59(6):567-70. PubMed ID: 3291847 [Abstract] [Full Text] [Related]