Prevalence of symptoms and symptom-based conditions among Gulf War veterans: current status of research findings.

1 Office of the Director, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA. 2 Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA. 3 Department of Internal Medicine, University of Iowa College of Medicine, and Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA. 4 Department of Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI. 5 Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA.