1 Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA; Department of Emergency Medicine, Harvard Medical School, Boston, MA.
2 West Health Institute, La Jolla, CA; Department of Emergency Medicine, University of North Carolina, Chapel Hill, NC.
3 Department of Emergency Medicine, Yale School of Medicine, New Haven, CT; Geriatrics Research, Education, and Clinical Center, James J. Peters VA Medical Center, Bronx, NY.