1 University of Minnesota Medical School, Twin Cities, Department of Medicine, Minneapolis, MN, USA; Center for Resuscitation Medicine, University of Minnesota, Minneapolis, MN, USA.
2 Center for Resuscitation Medicine, University of Minnesota, Minneapolis, MN, USA; University of Minnesota Medical School, Twin Cities, Department of Medicine, Division of Cardiology, Minneapolis, MN, USA. Electronic address: yanno001@umn.edu.