title: The Ups & downs of EMS.
mesh_terms: D003194:Computer-Assisted Instruction; D004562:Electrocardiography; D004632:Emergency Medical Services / Q000458:organization & administration*; D004634:Emergency Medical Technicians / Q000193:education* / Q000458:organization & administration*; D005260:Female; D061388:Firefighters; D006801:Humans; D020407:Internet; D008297:Male; D008404:Massachusetts; D009203:Myocardial Infarction / Q000175:diagnosis*; D019982:Organizational Case Studies; D009936:Organizational Innovation; D012984:Software