1. HSR&D Center for Health Information and Communication, Richard L. Roudebush VA Medical Center, Indianapolis, IN 46202, USA
2. Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
3. Edward Hines Jr. VA Hospital, Hines, IL 60141, USA
4. St. Louis VA Health Care System, St. Louis, MO 63103, USA
5. Center for Health Services Research, Regenstrief Inc., Indianapolis, IN 46202, USA