1 School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia; Prehospital, Resuscitation and Emergency Care Research Unit, Curtin University, Perth, Western Australia, Australia. Electronic address: janet.bray@monash.edu.
2 Clinical Trials Unit, University of Warwick, Coventry, United Kingdom. Electronic address: https://twitter.com/EPPiC_Chris.
3 Centre for Research and Evaluation, Ambulance Victoria, Blackburn North, Victoria, Australia; School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia; Department of Paramedicine, Monash University, Melbourne, Victoria, Australia. Electronic address: https://twitter.com/Ziad_Nehme1.