1 Department of Emergency Medicine, Denver Health, Denver, Colorado.
2 Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian/Weill Cornell Medicine, New York, New York, clark.owyang@gmail.com.
3 Department of Emergency Medicine, University of Arizona College of Medicine, Tucson, Arizona.
4 Department of Anesthesiology, Winchester Hospital, Tufts University School of Medicine, Boston, Massachusetts.
5 Department of Emergency Medicine, University of Arizona College of Medicine, Tucson, Arizona, Department of Medicine, Division of Pulmonary, Allergy, Critical Care and Sleep, University of Arizona College of Medicine, Tucson, Arizona.