1. From the Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia (K.D., J.E.B., K.S., S.B., L.S., J.F.); Clinical and Community Services, Ambulance Victoria, Melbourne, Australia (K.D., S.B.); Department of Research and Evaluation, Ambulance Victoria, Melbourne, Australia (K.S.); Discipline of Emergency Medicine, School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Perth, Australia ...