[1] Rice Univ, Sch Social Sci, Houston, TX USA
[2] VA South Cent Mental Illness Res Educ & Clin Ctr, Houston, TX USA
[3] Michael E DeBakey VA Med Ctr, VA HSR&D Ctr Innovat Qual Effectiveness & Safety, Houston, TX USA
[4] Baylor Coll Med, Menninger Dept Psychiat & Behav Sci, Houston, TX USA
[5] George E Wahlen VA Med Ctr, Salt Lake City, UT USA
[6] Univ Texas MD Anderson Hosp, Thorac Head & Neck Med Oncol, MEDVAMC 152 2002 Holcombe Blvd, Houston, TX 77030 USA