1. Epidemiology Program; Post Deployment Health Services (10P4Q); Office of Patient Care Services; Department of Veterans Affairs; Washington District of Columbia
2. Division of Occupational and Environmental Medicine and Division of Pulmonary and Critical Care Medicine, Department of Medicine, School of Medicine, University of Maryland-Baltimore; Baltimore Veterans Affairs Medical Center; Baltimore Maryland
3. Office of Research and Development, Veterans Health Administration; Department of Veterans Affairs; Washington District of Columbia