Air medical accident rates: a historical look back at causes.
Collett
H M
HM
D000060:Accidents, Aviation / Q000706:statistics & numerical data*; D000401:Aircraft / Q000706:statistics & numerical data*; D000552:Ambulances / Q000706:statistics & numerical data*; D004868:Equipment Failure; D006761:Hospitals; D014481:United States; D014887:Weather