1. Department of Internal Medicine and
2. Department of Radiology
3. Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle, Washington
4. Department of Pulmonary and Critical Care Medicine, and
5. Department of Pathology, VA Puget Sound Health Care System, Seattle, Washington
6. Division of Thoracic Surgery, VA Palo Alto Health Care System, Palo Alto, California; and
7. Department of Cardiothoracic Surgery, Stanford University, Palo Alto, California