1 Department of Internal Medicine and Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan; Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan. Electronic address: jkrai@med.umich.edu.
2 Department of Internal Medicine and Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan.
3 Department of Internal Medicine and Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan; Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan; Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan.