title: The educational hourglass. What a difference two decades can make....
authors.forename: K
authors.initials: K
authors.lastname: Dernocoeur
mesh_terms: D003479:Curriculum / Q000592:standards; D004632:Emergency Medical Services / Q000266:history*; D004634:Emergency Medical Technicians / Q000193:education*; D049673:History, 20th Century; D014481:United States