[1] Michael E DeBakey VA Med Ctr, Houston VA HSR&D Ctr Innovat Qual Effectiveness &, Houston, TX 77030 USA
[2] Baylor Coll Med, Margaret M & Albert B Alkek Dept Med, Houston, TX 77030 USA
[3] Baylor Coll Med, Menninger Dept Psychiat & Behav Sci, Houston, TX 77030 USA
[4] VA South Cent Mental Illness Res, Houston, TX USA