1. Division of Rheumatology, Department of Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC
2. Environmental Autoimmunity Group, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, MD
3. Veteran’s Affairs Medical Center, University of Oklahoma Health Sciences Center, and Oklahoma Medical Research Foundation, Oklahoma City, OK
4. Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA