1Department of Emergency Medicine, University of Washington, Seattle, WA.
2Division of Pulmonary, Critical Care, and Sleep Medicine, Harborview Medical Center, University of Washington, Seattle, WA.
3Airlift Northwest, UW Medicine, Seattle, WA.
4Seattle Fire Department, Seattle, WA.
5University of North Dakota School of Medicine, Grand Forks, ND.
6Department of Health Services, University of Washington, Seattle, WA.
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Dr. Johnson’s institution received funding from National Institutes of Health (U01HL123008-02) and Medic One Foundation. Dr. Maynard disclosed government work. Dr. Sayre’s institution received funding from Stryker/Physio-Control. Drs. Johnson and Counts receive funding from the Medic One Foundation for unrelated work. The remaining authors have disclosed that they do not have any potential conflicts of interest.
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