1 Division of Hospital Medicine, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin (F.A.K.).
2 Priscilla Chan and Mark Zuckerberg San Francisco General Hospital & Trauma Center, The Center for Vulnerable Populations, University of California San Francisco, San Francisco, California (B.A.W.).
3 Division of Hospital Medicine, Denver Health and Hospital Authority, Department of Medicine, University of Colorado, Denver, Colorado (L.A.H.).