ASHBEAMS (American Society of Hospital Based Emergency Air Medical Services) membership survey.
D000401:Aircraft; D001291:Attitude of Health Personnel / Q000706:statistics & numerical data*; D003142:Communication; D003625:Data Collection; D004636:Emergency Service, Hospital; D012952:Societies / Q000706:statistics & numerical data*; D012954:Societies, Hospital / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D014481:United States