1. Department of Anesthesia and Perioperative Care University of California San Francisco San Francisco California USA
2. Department of Emergency Medicine Harbor‐University of California Los Angeles Medical Center Los Angeles California USA
3. David Geffen School of Medicine at the University of California Los Angeles Los Angeles California USA
4. Department of Surgery Division of Trauma Critical Care and Acute Care Surgery Oregon Health & Science University Portland Oregon USA
5. Department of Surgery University of California San Francisco San Francisco California USA