1 Division of General Internal Medicine and Geriatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA.
2 Indiana University Center for Aging Research, Regenstrief Institute Inc., Indianapolis, Indiana, USA.
3 Research in Palliative and End-of-Life Communication and Training (RESPECT) Center, Indiana University School of Medicine, Indianapolis, Indiana, USA.
4 US Department of Veterans Affairs Greater Los Angeles Healthcare System (VAGLAS) Health Services Research and Development Service (HSR&D) Center of Innovation, Los Angeles, California, USA.
5 David Geffen School of Medicine, University of California, Los Angeles, California, USA.
6 Anna and Harry Borun Center for Gerontological Research, University of California Division of Geriatrics, Los Angeles, California, USA.
7 RAND Corporation, Santa Monica, California, USA.
8 Indiana University School of Nursing, Indianapolis, Indiana, USA.
9 School of Social Work, University of North Carolina, Chapel Hill, North Carolina, USA.
10 Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, North Carolina, USA.
11 Center for Excellence in Assisted Living (CEAL), School of Social Work, University of North Carolina, Chapel Hill, North Carolina, USA.
12 Division of Geriatric Medicine, University of Colorado School of Medicine Anschutz Campus, Aurora, Colorado, USA.
13 Denver Veterans Affairs Medical Center, Aurora, Colorado, USA.
14 Division of Geriatric Medicine, UMass Chan Medical School, Worcester, Massachusetts, USA.