title: Letter by Mark et al regarding article, "Implementation of the fifth link of the chain of survival concept for out-of-hospital cardiac arrest".
authors.forename: Dustin G
authors.initials: DG
authors.lastname: Mark
authors.forename: David R
authors.initials: DR
authors.lastname: Vinson
authors.forename: Dustin W
authors.initials: DW
authors.lastname: Ballard
mesh_terms: D016887:Cardiopulmonary Resuscitation; D005260:Female; D006801:Humans; D008297:Male; D058687:Out-of-Hospital Cardiac Arrest / Q000401:mortality* / Q000628:therapy*; D017063:Outcome Assessment, Health Care; D017410:Practice Guidelines as Topic