[1] Univ Michigan, VA Ann Arbor Healthcare Syst, VA Ctr Clin Management Res, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Sch Nursing, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Dept Otolaryngol, Ann Arbor, MI 48109 USA
[4] Univ Michigan, Dept Psychiat, Ann Arbor, MI 48109 USA
[5] VA Ann Arbor Healthcare Syst, VA Ctr Clin Management Res, Ann Arbor, MI 48105 USA
[6] VA Ann Arbor Healthcare Syst, Ann Arbor, MI 48105 USA