[1] University of Pittsburgh School of Medicine,Departments of Critical Care Medicine and Emergency Medicine
[2] Clinical Research,Division of Pulmonary and Critical Care Medicine
[3] Investigation,Center for Healthcare Outcomes & Policy
[4] and Systems Modeling of Acute Illness (CRISMA) Center,Department of Epidemiology
[5] University of Michigan,Saint Luke’s Mid America Heart Institute
[6] University of Michigan,Department of Emergency Medicine
[7] University of Washington School of Public Health,King County MedicOne
[8] University of Missouri-Kansas City School of Medicine,Department of Medicine, Division of General Internal Medicine
[9] University of Pittsburgh School of Medicine,Department of Critical Care Medicine
[10] King County Emergency Medical Services,undefined
[11] University of Washington School of Medicine,undefined
[12] University of Pittsburgh School of Medicine,undefined