1. Division of Pulmonary, Allergy, and Critical Care, University of Minnesota and Regions Hospital, St. Paul, MN
2. Section of Pulmonary and Critical Care, Regions Hospital, St. Paul, MN
3. Section of Internal Medicine, Regions Hospital and Section of Rheumatology, University of Minnesota Medical School, Minneapolis, MN
4. Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN
5. School of Psychology, Vanderbilt University, Nashville, TN
6. School of Psychology, Georgia Institute of Technology, Atlanta, GA