1. Department of Pediatrics, Georgetown University Medical Center, Washington, D.C., USA
2. Inova Shar Cancer Institute, Center for Drug Discovery and Development, Fairfax, VA, USA
3. Georgetown-Howard Universities Center for Clinical and Translational Science, Washington, D.C., USA
4. MedStar Health Research Institute, Hyattsville, MD, USA
5. Division of Rheumatology, Milton S. Hershey Medical Center at Penn State University, Hershey PA, USA