1. Department of Emergency Medicine, University of Wisconsin-Madison, Madison, WI, USA
2. School of Nursing, University of Wisconsin-Madison, Madison, WI, USA
3. College of Engineering, University of Wisconsin-Madison, Madison, WI, USA
4. Department of Emergency Medicine, University of Wisconsin-Madison, Madison, WI, USA; Department of Medicine (Geriatrics and Gerontology), University of Wisconsin-Madison, Madison, WI, USA
5. Department of Population Health Sciences, University of Wisconsin-Madison, Madison, WI, USA