Helicopter emergency medical services and weather-related accidents.
PHI Air Medical LLC, Sierra Vista, AZ.
Bryan
B
Butler
D000060:Accidents, Aviation / Q000401:mortality / Q000706:statistics & numerical data; D017732:Air Ambulances / Q000706:statistics & numerical data; D006801:Humans; D014481:United States / Q000453:epidemiology; D014887:Weather