title: Air medical accidents involving collision with objects.
authors.affiliation: EMS flying and management.
authors.forename: R S
authors.initials: RS
authors.lastname: Frazer
mesh_terms: D000060:Accidents, Aviation / Q000706:statistics & numerical data* / Q000639:trends; D017732:Air Ambulances / Q000706:statistics & numerical data*; D001359:Aviation / Q000592:standards*; D003625:Data Collection; D006801:Humans; D014481:United States / Q000453:epidemiology