1. Psychology Service, Iowa City Veterans' Affairs Medical Center, Iowa City, Iowa.
2. HSR&D Center for Mental Health Care Outcomes and Research, Little Rock Veterans Affairs Medical Center; Department of Psychiatry, The University of Arkansas for Medical Sciences, Little Rock, Arkansas.
3. Division of Psychological and Quantitative Measurement, The College of Education, The University of Iowa, Iowa City, Iowa.
4. Health Services Research and Development Centers of Excellence, Roudebush Veterans Affairs Medical Center, Regenstrief Institute, Inc., and The Indiana University School of Medicine, Indianapolis, Indiana.