Neck stiffness and dysphagia.

REFERENCES 1 Gräsner JT, Wnent J, Herlitz J, et al. Survival after outofhospital cardiac arrest in Europe Results of the EuReCa TWO study. Resuscitation 2020;148:218–26. 2 Nichol G, Thomas E, Callaway CW, et al. Regional variation in outofhospital cardiac arrest incidence and outcome. JAMA 2008;300:1423. 3 MEH O, Shin SD, De Souza NNA. Outcomes for outofhospital cardiac arrests across 7 countries in Asia: the pan Asian resuscitation outcomes study (PAROS). Resuscitation 2015 http://linkinghub.elsevier.com/retrieve/pii/S030095721500338X 4 Yan S, Gan Y, Jiang N, et al. The global survival rate among adult outofhospital cardiac arrest patients who received cardiopulmonary resuscitation: a systematic review and metaanalysis. Crit Care 2020;24:61. 5 Sasson C, Rogers MAM, Dahl J, et al. Predictors of survival from outofhospital cardiac arrest: a systematic review and metaanalysis. Circ Cardiovasc Qual Outcomes 2010;3:63–81. 6 Wengenmayer T, Staudacher DL. Need for speed in outofhospital cardiac arrest. Resuscitation 2019;144:187–8. 7 Chocron R, Loeb T, Lamhaut L, et al. Ambulance density and outcomes after outofhospital cardiac arrest. Circulation 2019;139:1262–71. 8 Grunau B, Kawano T, Dick W, et al. Trends in care processes and survival following prehospital resuscitation improvement initiatives for outofhospital cardiac arrest in British Columbia, 20062016. Resuscitation 2018;125:118–25. 9 Okubo M, Schmicker RH, Wallace DJ, et al. Variation in survival after outofhospital cardiac arrest between emergency medical services agencies. JAMA Cardiol 2018;3:989. 10 Starks MA, Schmicker RH, Peterson ED, et al. Association of neighborhood demographics with outofhospital cardiac arrest treatment and outcomes: where you live may matter. JAMA Cardiol 2017;2:1110. 11 Brooks SC. Bystander CPR: location, location, location. Resuscitation 2013;84:711–2. 12 Sanders AB, Kern KB. Surviving cardiac arrest: location, location, location. JAMA 2008;300:1462. 13 Mell HK, Mumma SN, Hiestand B, et al. Emergency medical services response times in rural, suburban, and urban areas. JAMA Surg 2017;152:983. 14 Silverman RA, Galea S, Blaney S. The “vertical response time”: barriers to ambulance response in an urban area. Acad Emerg Med 2007;14:772–8. 15 Morrison LJ, Angelini MP, Vermeulen MJ, et al. Measuring the EMS patient access time interval and the impact of responding to highrise buildings. Prehosp Emerg Care 2005;9:14–18. 16 Morrison LJ, Nichol G, Rea TD, et al. Rationale, development and implementation of the resuscitation outcomes Consortium EpistryCardiac arrest. Resuscitation 2008;78:161–9. 17 Gräsner JT, Lefering R, Koster RW, et al. EuReCa ONE27 nations, one Europe, one registry. Resuscitation 2016;105:188–95. 18 Doctor NE, Ahmad NSB, Pek PP, et al. The PanAsian resuscitation outcomes study (PAROS) clinical research network: what, where, why and how. Singapore Med J 2017;58:456–8. 19 Beck B, Bray J, Smith K, et al. Establishing the AusROC Australian and New Zealand outofhospital cardiac arrest Epistry. BMJ Open 2016;6:e011027. 20 Heidet M, Fraticelli L, Grunau B, et al. ReACanROC: towards the creation of a FranceCanada research network for outofhospital cardiac arrest. Resuscitation 2020;152:133–40. 21 Dick WF. AngloAmerican vs. FrancoGerman emergency medical services system. Prehosp Disaster Med 2003;18:29–37. 22 Symons P, Shuster M. International EMS systems: Canada. Resuscitation 2004;63:119–22. 23 Adnet F, Lapostolle F. International EMS systems: France. Resuscitation 2004;63:7–9. 24 Jacobs I, Nadkarni V, Bahr J, et al. Cardiac arrest and cardiopulmonary resuscitation outcome reports: update and simplification of the Utstein templates for resuscitation registries. Resuscitation 2004;63:233–49. 25 Hubert H, Tazarourte K, Wiel E, et al. Rationale, methodology, implementation, and first results of the French outofhospital cardiac arrest registry. Prehosp Emerg Care 2014;18:511–9. 26 Luc G, Baert V, Escutnaire J, et al. Epidemiology of outofhospital cardiac arrest: a French national incidence and midterm survival rate study. Anaesth Crit Care Pain Med 2019;38:131–5. 27 Idris AH, Bierens JJLM, Perkins GD, et al. 2015 revised UtsteinStyle recommended guidelines for uniform reporting of data from DrowningRelated resuscitation: an ILCOR Advisory statement. Circ Cardiovasc Qual Outcomes 2017;10:e000024.