[1] WG Hefner Vet Affairs Med Ctr, Vet Affairs Midatlantic Mental Illness Res Educ &, Salisbury, NC 28144 USA
[2] WG Hefner Vet Affairs Med Ctr, Res & Acad Affairs Serv Line, Salisbury, NC 28144 USA
[3] WG Hefner Vet Affairs Med Ctr, Mental Hlth Serv Line, Salisbury, NC USA
[4] Wake Forest Sch Med, Dept Psychiat, Winston Salem, NC 27101 USA
[5] Wake Forest Sch Med, Dept Radiol, Winston Salem, NC 27101 USA
[6] Baylor Coll Med, Menninger Dept Psychiat & Behav Sci, Houston, TX 77030 USA
[7] Via Coll Osteopath Med, Div Biomed Sci, Blacksburg, VA USA
[8] Baylor Coll Med, Dept Phys Med & Rehabil, Houston, TX 77030 USA