title: Will work for free. Are volunteerism rates falling?
authors.affiliation: National Registry of EMTs.
authors.forename: Gregg S
authors.initials: GS
authors.lastname: Margolis
authors.forename: Jon
authors.initials: J
authors.lastname: Studnek
authors.forename: Antonio R
authors.initials: AR
authors.lastname: Fernandez
mesh_terms: D004634:Emergency Medical Technicians / Q000191:economics*; D006801:Humans; D014342:Truth Disclosure; D014481:United States; D014838:Volunteers / Q000706:statistics & numerical data