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.).