1. Division of Hospital Medicine, University of Colorado, Aurora, CO, USA
2. Department of Medicine, White River Junction VA Medical Center, White River Junction, VT, USA
3. Department of Medicine, The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, NH, USA
4. Section of Hospital Medicine, South Texas Veterans Health Care System, San Antonio, TX, USA
5. Division of Pulmonary and Critical Care Medicine and Division of General and Hospital Medicine, The University of Texas School of Medicine at San Antonio, San Antonio, TX, USA