title: First aid by the numbers.
authors.forename: L F
authors.initials: LF
authors.lastname: Johnson
mesh_terms: D005392:First Aid / Q000295:instrumentation* / Q000379:methods*; D006801:Humans; D009786:Occupational Health Services / Q000458:organization & administration*; D010934:Planning Techniques; D015397:Program Evaluation / Q000379:methods