[1] VA Cent Western Massachusetts Healthcare Syst, Bldg 12,Room 113,421 North Main St, Leeds, MA 01053 USA
[2] Univ Massachusetts, Dept Quantitat Hlth Sci, Med Sch, Worcester, MA 01605 USA
[3] VA Greater Los Angeles Healthcare Syst, VA HSR&D Ctr Study Healthcare Innovat Implementat, Los Angeles, CA USA
[4] Univ Calif Los Angeles, Dept Med, Div Gen Internal Med & Hlth Serv Res, David Geffen Sch Med, Los Angeles, CA 90024 USA
[5] Cent Arkansas Vet Affairs Healthcare Syst, Ctr Mental Healthcare & Outcomes Res, Little Rock, AR USA
[6] Cent Arkansas Vet Affairs Healthcare Syst, VA South Cent Mental Illness Res Educ & Clin Ctr, Little Rock, AR USA
[7] Univ Arkansas Med Sci, Dept Psychiat, Little Rock, AR 72205 USA
[8] VA Boston Hlth Care Syst, Boston, MA USA
[9] Boston Univ, Sch Med, Div Gen Internal Med, Boston, MA 02118 USA
[10] Durham Vet Affairs Hlth Care Syst, Ctr Hlth Serv Res Primary Care, Durham, NC USA
[11] Duke Univ, Div Gen Internal Med, Sch Med, Durham, NC USA
[12] Fargo VA Hlth Care Syst, Fargo, ND USA
[13] Univ North Dakota, Dept Internal Med, Sch Med & Hlth Sci, Grand Forks, ND 58201 USA
[14] VA Sierra Nevada Hlth Care Syst, Reno, NV USA
[15] Rocky Mt Reg VA Med Ctr, Denver, CO USA
[16] Iowa City VA Healthcare Syst, CRIISP, Iowa City, IA USA
[17] Univ Iowa, Coll Med, Dept Psychiat, Iowa City, IA 52242 USA
[18] VA Connecticut Healthcare Syst, West Haven, CT USA
[19] Yale Univ, Dept Gen Internal Med, Sch Med, New Haven, CT USA